Worked top down, in one piece, no side seams: each shoulder starts as a little strip, the back and front grow downward with neck stitches cast on between the shoulders, armholes are shaped by increases and cast-ons, then front and back join into one big round and the body is plain stockinette straight down to a ribbed hem. Neck and armhole ribs are picked up last.
Every step below carries your XXXL numbers, triple-checked, with stitch counts at each milestone. For the row-by-row choreography of the shaping rows, each step links to the exact section of the official pattern β which also has DROPS's video tutorials for each move (their terms ask that the full written pattern stays on their site, and their videos are genuinely good).
The fit check β read this before casting on
Stock XXXL is smaller than you like. Per DROPS's own diagram, XXXL finishes at 138 cm (54.3β³) around the chest and β because the body tapers inward going down β just 130 cm (51.2β³) at the hem. Your chest is 54β³ (fine, zero ease) but your widest point is 60β³ β the stock vest would be ~9β³ smaller than your middle, guaranteed to hug and ride up. The modification below fixes it by reversing the body shaping. It's the difference between a vest you wear and a vest that lives in a drawer.
Chris's fit modification (replaces the body decreases)
Follow the pattern exactly until the front and back join into the round at 290 stitches (= 138 cm). Then, instead of the pattern's four decrease rounds:
When the body measures 5 cm from the join, work an increase round: knit to 1 stitch before each side-marker stitch, make 1 (M1), K3 (the marked stitch and its neighbours), M1 β at both markers = 4 stitches increased.
Repeat the increase round every 3 cm, 10 times in total β 330 stitches β 157 cm β 62β³ β about +2β³ of ease over your widest point, arriving gradually so the vest A-lines gently over the middle.
At the pre-rib increase round the pattern grows the stitch count ~15% so the ribbing doesn't cinch: from 330, increase 50 evenly β 380 stitches (divisible by 4 β) for the K2/P2 hem rib.
Yarn cost of the mod: roughly +40β50 g over stock. Stock XXXL needs 500 g; modified β 545 g. Your 11 balls = 550 g β it fits, but with almost nothing spare: swatch, then frog the swatch and reuse the yarn, weigh at the checkpoints below, and if it runs tight, shorten the body 2β3 cm (each cm saves ~8 g at full width).
Materials & gauge
Yarn: Drops Karisma, colour 57 olive β 500 g stock / β545 g modified. You have 11 balls = 550 g.
Needles: 4 mm circular (80 cm) for stockinette Β· 3 mm circulars (40 + 80 cm) for all ribbing.
Tension: 21 stitches Γ 28 rows = 10 cm stockinette on 4 mm.
Full instructions, videos, corrections:DROPS 219-1 at garnstudio.com (one correction, April 2022, already in the current page text).
My gauge check
Swatch in stockinette on 4 mm, wash, lay flat, measure over 10 cm. (Then frog the swatch β you need the yarn back.)
Part 1 β The Back
Part 2 β The Front
Part 3 β The Body (with Chris's fit modification)
Part 4 β Finishing
Project photos
Progress shots and the finished vest β photos upload straight from your phone and stay with the project.
Page settings
Checking syncβ¦
Clears every checkbox and counter. Photos are kept (delete those individually with the β).