The Fair Isle sweater has a patterned yoke, cable-textured body and balloon sleeves visible in its gallery. The listing gives five sizes, Small, Medium, Large, 1XL and 2XL, and a 60% cotton, 40% acrylic composition. Its size table has a step that deserves more attention than the names of the sizes: chest moves from 44 in at Large to 50 in at 1XL.

Write down the chest and length as pairs

The source lists Small 42/24, Medium 43/25, Large 44/26, 1XL 50/27 and 2XL 52/27.5 in for chest/length. Chest changes by one inch between each of the first three sizes, then by six inches from Large to 1XL; length changes by only one inch across that same boundary. If Large feels narrow in a sweater you own, do not assume 1XL is only a little roomier. Compare both listed numbers with a sweater whose neckline, body and hem you like.

Check the sleeve independently

The balloon sleeve is a visible part of this design. A close jacket sleeve may compress or hide it, even if the sweater body fits. If you plan to layer over the sweater, try your own outer layer over a similarly full sleeve before relying on a body-size comparison alone. The listing does not provide sleeve circumference, cuff width or shoulder measurements, so the chest table cannot tell you how that layer will sit at the arms.

Resolve the chart convention before calculating ease

The table calls its figures “chest” and “length” but does not state whether chest is a body measurement or a finished-sweater measurement, or where the length starts. Keep your comparison consistent, and ask for those measurement points if you are between sizes. The source says “true to size,” but that phrase does not resolve the six-inch Large-to-1XL difference for an individual wearer. The body-versus-garment measurement guide explains how to make that distinction before ordering.