Sirdar Boxy Sweatshirt Jumper Knitting Pattern

Sirdar Boxy Sweatshirt Knitting Pattern

What is Being Made

The Sirdar Boxy Sweatshirt (Design No. 10108) is a relaxed-fit pullover sweater designed for beginner knitters. This classic wardrobe staple features a comfortable, oversized silhouette that pairs effortlessly with jeans, chinos, or denim skirts. The sweater is available in six sizes ranging from 81cm to 137cm chest measurement (32 inches to 54 inches), accommodating a wide range of body types from extra small through triple extra large.

Techniques Used

This pattern employs bottom-up construction, meaning you begin knitting from the lower edge of the garment and work upward toward the neckline. The sweater is worked flat on straight needles rather than in the round, which makes it ideal for beginners gaining confidence with fundamental knitting techniques. The pieces are then seamed together using mattress stitch or similar joining methods to create the finished garment. This traditional approach allows knitters to practice essential skills including increasing and decreasing shaping, managing multiple pieces, and executing neat seams.

Stitches Used

While the specific stitch patterns are detailed in the full pattern instructions, this design utilizes fundamental knitting stitches appropriate for beginner-level projects. The pattern is triple-checked by Sirdar to ensure success when worked with the recommended yarn, making it an excellent choice for knitters developing their stitch vocabulary and tension control.

Materials Required

The Sirdar Boxy Sweatshirt requires Sirdar No. 1 Stonewashed Aran yarn in 100g balls. The quantity needed depends on your chosen size: sizes S and M require 5 balls, sizes L and XL require 6 balls, size XXL requires 7 balls, and size XXXL requires 8 balls. The recommended shade is 803 Used Blue, though the pattern offers alternative stonewashed colorways including 804 Faded Bloom, 801 Pink Rinse, and 802 Sanded Oak.

You will need 5mm (UK size 6 / USA size 8) knitting needles for the main fabric and 4mm (UK size 8 / USA size 6) knitting needles for ribbed edgings. Additional supplies include stitch holders for managing stitches during construction and 4mm double-pointed needles for finishing details such as neckline bands.

Yarn Characteristics

Sirdar No. 1 Stonewashed Aran is a medium-weight yarn featuring a distinctive distressed denim effect. The stonewashed finish creates a fashionable, lived-in appearance that complements contemporary casual styling. This yarn weight and texture combination provides excellent stitch definition while remaining forgiving for beginner knitters. The Aran weight (approximately worsted weight) knits at a moderate gauge, allowing the project to progress at a satisfying pace while maintaining fabric integrity and drape suitable for a relaxed-fit sweater.

Pattern Specifications

• Design Number: 10108
• Skill Level: Beginner
• Garment Type: Pullover Sweatshirt
• Fit Style: Boxy, oversized silhouette
• Size Range: XS through XXXL (six sizes)
• Finished Chest Widths: 96cm to 147cm (37¾ inches to 58 inches)
• Full Length: 56cm to 66cm (22 inches to 26 inches)
• Sleeve Length: 23cm to 24cm (9 inches to 9½ inches)

About Sirdar

Sirdar is an established British yarn company founded in West Yorkshire in 1880, bringing over 140 years of hand knitting heritage to contemporary makers. The brand is renowned for combining classic knitting traditions with modern yarn innovations and fashionable colorways. Each Sirdar pattern undergoes rigorous quality assurance—triple-checked to guarantee successful results when using the specified Sirdar yarns, making this an excellent choice for knitters seeking reliable, well-tested designs.