Sport weight yarn is the heaviest of the light-weight yarns, perfect for mild-winter, fall, and spring projects. Sport weight yarn is also commonly referred to as size 2 yarn, fine yarn, 5-ply yarn (AUS), or baby yarn. Sport weight yarn is a great choice for shawls, sweaters, thick winter socks, and accessories. Sport weight yarn is also an excellent option for baby and children’s knits as it provides a lovely, light warmth without adding bulk.
A typical skein of sport weight yarn will weigh 100 grams and measure between 250-350 yards. Sport weight yarns can be constructed in multiple ways such as chainette, cable ply, single ply, and most commonly two, three, and four-ply. Sport weight yarn can be knit across a variety of gauges, as densely as 5.75 stitches to the inch for a warm, wind-resistant sweater or as loosely as 2.5 stitches to the inch for a fabric with beautiful drape.