Chunky Crochet Vest: Free Pattern in Sizes XS–5XL (With Video Tutorial)
If you’ve been searching for the perfect chunky crochet vest pattern that actually fits a wide range of body types, you’ve landed in the right place. This free crochet pattern walks you through every step of creating a cozy, stylish, oversized vest — from the very first chain to the finished edge. Whether you’re a beginner who has just learned the basics or an experienced crocheter looking for a satisfying weekend project, this pattern is designed to be approachable, customizable, and genuinely fun to make.
Chunky vests have become one of the most popular crochet garments in recent years, and it’s easy to see why. They layer beautifully over turtlenecks and long-sleeved tops in autumn and winter, they work up quickly with bulky yarn, and they look like something you’d find in a boutique window for far more than a skein of yarn costs. Best of all, when you make it yourself, you get to choose the color, adjust the length, and size it exactly to your measurements.
This pattern is available in sizes XS through 5XL, with full stitch counts for every size so nobody gets left out. Let’s get into it.
What You’ll Need
Before you start, gather your materials. Having everything on hand makes the process smoother and helps you avoid interruptions mid-row.
Yarn: You’ll need a bulky or super bulky weight yarn (weight category 5 or 6). Something with a bit of softness is ideal since this vest sits close to the neck and upper body. Popular choices include Lion Brand Wool-Ease Thick & Quick, Paintbox Yarns Simply Chunky, or any similar yarn that works to gauge. The yardage varies by size — roughly 300–400 yards for XS/S, 400–500 yards for M/L, 500–620 yards for XL/2XL, and 620–750 yards for 3XL–5XL. Always buy a little extra to be safe.
Hook: A 9mm (US size M/N-13) crochet hook is recommended for this pattern. If you tend to crochet tightly, go up to a 10mm. If you crochet loosely, try a 8mm. Gauge swatching is worth the ten minutes it takes.
Gauge: 9 stitches and 10 rows = 4 inches (10 cm) in half double crochet. Take a moment to swatch before you begin. Even a half-stitch difference per inch adds up significantly across the width of a garment.
Notions: Scissors, a yarn needle for weaving in ends, stitch markers (optional but helpful), and a measuring tape.
Sizing Chart
This pattern is written for the following finished bust measurements. Crochet garments are typically worn with 2–4 inches of positive ease, meaning the finished garment is a bit larger than your actual bust measurement for a comfortable, relaxed fit.
XS: Finished bust 34 inches (fits 30–32″ actual)
S: Finished bust 38 inches (fits 33–36″ actual)
M: Finished bust 42 inches (fits 37–40″ actual)
L: Finished bust 46 inches (fits 41–44″ actual)
XL: Finished bust 50 inches (fits 45–48″ actual)
2XL: Finished bust 54 inches (fits 49–52″ actual)
3XL: Finished bust 58 inches (fits 53–56″ actual)
4XL: Finished bust 62 inches (fits 57–60″ actual)
5XL: Finished bust 66 inches (fits 61–64″ actual)
The length of the vest from shoulder to hem is approximately 24 inches for all sizes, though instructions for adjusting this are included below.
Stitches and Abbreviations
This pattern uses standard US crochet terminology.
ch — chain
sl st — slip stitch
sc — single crochet
hdc — half double crochet
dc — double crochet
sp — space
rep — repeat
st(s) — stitch(es)
RS — right side
WS — wrong side
BLO — back loop only
The main stitch used throughout the body of this vest is half double crochet worked in the back loop only. This creates a beautiful ribbed, textured fabric that has a slight stretch horizontally — which is exactly what you want in a fitted but relaxed garment. The edges are finished with a simple single crochet border to give everything a clean, professional look.
Pattern Notes
This vest is worked in two flat panels — a front panel and a back panel — which are then seamed at the shoulders and sides, leaving armhole openings. This construction method is ideal for beginners because it removes the complexity of shaping while crocheting in the round, and it makes sizing adjustments very intuitive.
If you prefer a seamless construction, you can work the body in the round up to the armholes and then divide for the front and back. Instructions for that variation are included as a note at the end of the pattern.
The pattern is written with the smallest size first, and larger sizes follow in parentheses in this order: XS (S, M, L, XL, 2XL, 3XL, 4XL, 5XL).
Back Panel
Foundation chain: Chain 39 (43, 48, 52, 57, 61, 66, 70, 75).
Row 1 (RS): Hdc in the 3rd chain from the hook and in each chain across. Turn. — 37 (41, 46, 50, 55, 59, 64, 68, 73) hdc.
Row 2: Ch 2 (does not count as a stitch throughout), hdc BLO in each stitch across. Turn.
Repeat Row 2 until your work measures approximately 14 inches from the foundation chain, or your desired length to the underarm. For a cropped vest, aim for 10–12 inches. For a longer tunic-style vest, work until you reach 16–18 inches.
Armhole shaping: At this point, you will simply stop and begin working the shoulder area, leaving the armhole open. Slip stitch across the first 4 (4, 5, 5, 6, 6, 7, 7, 8) stitches. Ch 2, hdc BLO across to the last 4 (4, 5, 5, 6, 6, 7, 7, 8) stitches. Leave those remaining stitches unworked. Turn. — 29 (33, 36, 40, 43, 47, 50, 54, 57) hdc.
Continue in pattern (Row 2 as established) for 10 more inches, or until your work reaches the desired shoulder height. For most people, 9–11 inches from the armhole shaping to the top of the shoulder works well, but you can try the piece on as you go by folding it and holding it up to your body.
Fasten off and weave in ends.
Front Panel
Work the front panel exactly the same as the back panel up to and including the armhole shaping. The stitch counts are identical.
After the armhole shaping row, continue in pattern for 6 inches (instead of 10 inches for the back). This is where you’ll create the neckline.
Neckline shaping: Work across the first 10 (12, 13, 15, 16, 18, 19, 21, 22) stitches. Fasten off. Skip the center 9 (9, 10, 10, 11, 11, 12, 12, 13) stitches. Reattach yarn to the next stitch and work across the remaining 10 (12, 13, 15, 16, 18, 19, 21, 22) stitches. Turn.
You now have two shoulder sections. Work each shoulder section separately for 4 more inches (until the shoulder matches the back panel height). Fasten off both sides.
Assembly
Lay your two panels flat with the right sides facing each other. Using your yarn needle and a length of matching yarn, seam the shoulders together using a whip stitch or mattress stitch. Each shoulder seam should span the outer 10 (12, 13, 15, 16, 18, 19, 21, 22) stitches on each side. The neckline opening in the center is left open.
Next, seam the sides. With the right sides still together, align the side edges of the front and back panels. Starting from the bottom hem, seam upward approximately 10–12 inches, stopping several inches before the armhole shaping begins. This leaves the armhole opening. The exact number of inches you seam depends on how large you want the armhole — for most sizes, leaving about 8–10 inches open at the armhole is comfortable.
Turn the vest right side out and try it on. Check the armhole openings and adjust your seaming if needed before finishing.
Edging
A simple single crochet border ties the whole garment together and gives the edges a neat, polished finish.
Armhole edging: Join yarn at the underarm seam. Work single crochet evenly around the armhole opening. At the corners where the shaping happened, work 3 single crochets into the corner stitch to help it lie flat. When you reach your starting point, join with a slip stitch. Fasten off and weave in the end. Repeat for the second armhole.
Neckline edging: Join yarn at one shoulder seam. Work single crochet evenly around the entire neckline — across the back neck, down the front neckline, across the bottom of the front neckline, and back up the other side. Join with a slip stitch. If you’d like a tighter, more finished neckline, work a second round of slip stitches or a row of reverse single crochet (also called crab stitch) for a corded edge.
Hem edging (optional): If your foundation chain edge looks a bit uneven, work a single round of single crochet around the bottom hem to even it out.
Sizing and Fit Adjustments
One of the best things about this pattern is how easy it is to customize. Here are a few adjustments you might want to make.
Length: To make the vest longer, simply work more rows in the body before the armhole shaping. Each additional row adds approximately half an inch of length. To shorten the vest, work fewer rows.
Armhole size: If you find the armhole too tight or too large, you can adjust by changing how many stitches you skip at the armhole shaping, and then adjust the side seaming accordingly. For a sleeveless summer style with wider armholes, skip more stitches at the armhole shaping.
Neckline depth: To create a deeper V-neck or a wider scoop neck, simply begin your neckline shaping earlier (after 4 inches above the armhole instead of 6, for example) or skip more center stitches for the neck opening.
Width: If your gauge is slightly off or you want a different fit, you can easily add or remove stitches in multiples of 2 to adjust the width of the panels without affecting the pattern structure.
Yarn Substitution Tips
Choosing the right yarn can completely transform this vest. Here are a few things to keep in mind when substituting yarn.
Fiber content matters for drape. Wool and wool blends tend to have good structure and slight elasticity, which helps the vest hold its shape. Pure acrylic yarns are budget-friendly and machine washable, which is a huge plus for everyday wear. Cotton-blend yarns give the fabric a slightly heavier drape and work well for a vest meant to be worn in transitional weather.
Avoid yarns that are very slippery (like pure silk or bamboo) if this is your first time working the pattern — they can make it harder to maintain consistent tension. Save those for when you’ve made the pattern once and feel comfortable with the construction.
Seamless In-the-Round Variation
If you prefer not to seam, you can work the body of this vest in the round as follows.
Work your foundation chain as the total circumference of the vest: chain 76 (84, 94, 102, 112, 120, 130, 138, 148) and join with a slip stitch to form a ring, being careful not to twist.
Work in rounds of hdc BLO until the body reaches your desired length to the underarm (approximately 14 inches). At this point, divide your stitches in half — 38 (42, 47, 51, 56, 60, 65, 69, 74) stitches for the front and 38 (42, 47, 51, 56, 60, 65, 69, 74) stitches for the back. Work each section flat from this point forward, following the same armhole shaping and shoulder shaping instructions as the original pattern. Seam only the shoulders.
Blocking and Care
Once your vest is complete, blocking it can make a significant difference in the finished look. If you used a natural fiber like wool, wet blocking is very effective. Soak the vest in lukewarm water for about 20 minutes, gently press out the excess water (don’t wring), then lay it flat on a blocking mat and pin it to the finished measurements. Allow it to dry completely before wearing.
For acrylic yarns, you can steam block by holding a steam iron about an inch above the fabric and letting the steam relax the stitches without touching the yarn directly. This softens the texture and helps the fabric lie flat.
For ongoing care, check the yarn label for washing instructions. Many bulky yarns are machine washable on a gentle cycle, but lay the vest flat to dry rather than putting it in the dryer, which can cause shrinkage and distortion.
Video Tutorial
If you’re a visual learner, a full video tutorial is available to walk you through every step of this pattern. The video covers the foundation chain, the half double crochet back loop only stitch, the armhole and neckline shaping, the assembly, and the finished edging. It also includes tips for adjusting the fit as you go. You can find the video on YouTube by searching for the title: Chunky Crochet Vest – Free Pattern Tutorial for Sizes XS to 5XL or by visiting the video link in the description of this post. The tutorial runs through the full pattern at a relaxed pace so you can pause, rewind, and work alongside it in real time.
Styling Ideas
Once you finish your vest, you’ll probably want to reach for it every day. Here are a few ways to style it depending on the season and occasion.
For a classic autumn look, layer the vest over a fitted black turtleneck with jeans and ankle boots. The chunky texture adds visual interest and warmth without bulk.
For a more relaxed, weekend look, wear it over a simple long-sleeved t-shirt and pair it with straight-leg trousers or leggings. This is especially cozy in a neutral cream or oatmeal-toned yarn.
For a boho-inspired outfit, try layering the vest over a flowy blouse or a printed shirt that peeks out at the hem. Add some layered necklaces and you have something that feels pulled-together and relaxed at the same time.
If you made the vest in a bold color, let it be the focal point and keep everything else simple and neutral.
Share Your Make
There is nothing more satisfying than finishing a handmade garment and showing it off, and the crochet community is one of the most enthusiastic and supportive creative communities around. If you make this vest, please share a photo in the comments below or tag your project online. Seeing how different yarn colors and sizes come together is always inspiring, and your version might be exactly what encourages someone else to cast on (or chain up) for the first time.
If you run into any questions while working the pattern, leave a comment and I’ll do my best to help you troubleshoot. Garment patterns can feel intimidating at first, but this construction is genuinely one of the more forgiving ways to make a wearable piece, and once you’ve made it once, you’ll find yourself returning to this construction again and again.
Happy crocheting — I hope this vest becomes a wardrobe staple you wear all season long.
