O-Jumper

O-Jumper by Jennifer Wood

What is Being Made

The O-Jumper is a knitted pullover sweater designed by Jennifer Wood and available as a downloadable PDF pattern. This intermediate-level project features a classic jumper silhouette with a finished bust measurement range from 32 inches (80 cm) to 62 inches (155 cm), accommodating eleven different sizes. The size 35.25 inches (88 cm) is modeled with zero ease, providing a close-fitting design. This sweater is an ideal project for knitters looking to expand their skills beyond beginner patterns while still maintaining manageable complexity.

Knitting Techniques Used

The O-Jumper employs fundamental knitting techniques suitable for intermediate crafters. The pattern utilizes circular needles for seamless construction, a method that reduces finishing work and creates a polished final garment. Knitters will work with standard decreasing methods, including knit two stitches together (k2tog) reductions to shape the garment. The pattern incorporates color work through the use of two distinct yarn colors—a main color and a contrasting color—allowing for creative color blocking or striped design elements. Marker placement guides construction, helping knitters track pattern repeats and shaping sections throughout the project.

Stitches and Stitch Techniques

The O-Jumper pattern uses essential knitting stitches and abbreviations including:

• Knit (k) – the foundational stitch for creating the fabric
• Purl (p) – used in combination with knit stitches for texture and pattern variation
• Knit two stitches together (k2tog) – a right-leaning decrease used for shaping the armholes, neckline, and other fitted areas
• Increase (inc) – techniques for expanding stitch count where needed
• Cast on (CO) – the foundation row that begins the project
• Bind off (BO) – the finishing technique that secures the final stitches

These stitches combine to create a cohesive fabric structure that forms the body, sleeves, and neckline of the finished jumper.

Materials: Yarn and Needles

The O-Jumper pattern calls for Less Traveled Yarn DK weight yarn, a premium blend of 75% merino wool and 25% nylon. This fiber composition provides warmth, breathability, and durability while the nylon content adds resilience to the finished garment. Each 100-gram skein contains 245 yards (224 meters) of yarn.

Yardage requirements vary by size. The main color yarn, Barrel Aged, requires between 4 and 7 skeins depending on the chosen size, totaling 760 to 1685 yards (695 to 1540 meters). The contrasting color, Obsidian, requires 1 skein in all sizes, with yardage ranging from 120 to 160 yards (110 to 145 meters) to accommodate the larger finished bust measurements.

Needle requirements include size 4 (3.5mm) circular needles in both 16-inch (40 cm) and 24-inch (60 cm) lengths, or longer if preferred. Circular needles allow for seamless in-the-round knitting, which is a hallmark of modern sweater construction and eliminates the need for seaming body pieces together after completion.

Pattern Overview

This downloadable PDF pattern from independent designer Jennifer Wood provides complete instructions for creating a versatile, wearable jumper. The intermediate difficulty level makes it accessible to knitters with foundational skills while offering enough complexity to develop technique. The extensive size range ensures a custom fit for various body measurements, and the two-color yarn option allows for personalization in the finished design.