Mercier Sweater Jumper Knitting Pattern

Mercier Sweater in Berroco Mochi

What is Being Made

The Mercier is a classic knit sweater designed by Amy Christoffers, offered in eight size options ranging from (37½" to 65½") bust measurement. This intermediate-level pullover features a finished length between 23" and 25" depending on size, making it suitable for various body types and proportions. The sweater showcases a structured silhouette with positive ease of 2–4 inches recommended for comfortable wear.

Knitting Techniques Used

This pattern employs several fundamental and intermediate knitting techniques to construct the garment. The sweater begins with ribbed edging worked on smaller needles to create elasticity and structure at the hem. The pattern uses knitting in the round for certain sections, requiring double-pointed needles or preferred small-circumference needles to maintain consistent tension. Stitch markers are strategically placed to help knitters maintain pattern alignment and track shaping throughout construction. The designer incorporates slip stitches to maintain clean edges where markers are positioned. Stitch holders are used to temporarily secure stitches during construction, and waste yarn serves as an alternative method for holding stitches. Button bands are integrated into the design, with eight 5/8" buttons spaced throughout the front closure.

Stitches Used

The Mercier pattern relies on classic stockinette stitch as its primary fabric texture, created by alternating knit rows on the right side with purl rows on the wrong side. This fundamental stitch produces a smooth, refined finish ideal for showcasing yarn characteristics. Ribbing in a 1×1 pattern (alternating single knit and purl stitches) appears at the cuffs, hem, and neckline to provide elasticity and visual definition. The pattern maintains 5-stitch garter stitch borders on each side of the ribbed sections, creating a frame effect and adding structural stability to the piece.

Materials: Yarn and Needles

The Mercier Sweater is designed to be knit with Berroco Mochi, a yarn that comes in 50-gram balls. The pattern calls for color #3225 Black Sesame, with yardage requirements varying by size: sizes XS through M require 5–6 balls, sizes L through XL require 7–8 balls, and sizes 2X through 3X require 8–9 balls. This yardage range allows knitters to select the appropriate quantity based on their chosen finished size.

Two sets of knitting needles are required to complete this project. Smaller needles in size 7 / 4.5 mm are used for the ribbed sections, which create the elastic edges. Larger needles in size 8 / 5 mm are used for the main stockinette stitch body, creating the primary fabric. Gauge is critically important for this pattern: knitters must achieve 16 stitches and 24 rows equaling 4 inches in stockinette stitch on the larger needles to ensure accurate finished measurements. Double-pointed needles or preferred small-circumference needles in both sizes 7 / 4.5 mm and 8 / 5 mm are necessary for knitting sections in the round. Additional notions include 2 stitch holders, 2 stitch markers for tracking pattern placement, and waste yarn as an alternative to stitch holders for securing stitches during construction.

Pattern Structure and Construction

The Mercier follows a traditional sweater construction method. The back piece is worked flat from the bottom up, beginning with a cast-on of 75–131 stitches depending on size. A set-up ribbing section establishes the 1×1 rib pattern with garter stitch borders, worked for 2 inches to create the hem edge. After switching to larger needles, the main pattern begins with alternating knit and purl rows to establish stockinette stitch while maintaining the garter stitch side borders and ribbed center section. This construction continues until the piece reaches 14 inches in length, at which point shaping and additional pattern elements are introduced. The intermediate skill level reflects the combination of techniques required: managing multiple needle sizes, maintaining pattern consistency, working with stitch markers, and executing button band placement.