This sweater can be made in any number of yarns, making it versatile across the seasons. The original denim colored Cotton would be a great option for spring! And an alpaca blend would make a deliciously toasty sweater. Just remember to match the gauge on the labels when substituting yarns, and knit a swatch before tackling the whole garment to confirm your gauge is dead-on. I'll completely understand if you want to make several in different colors; if I were a kid this would quickly become my favorite sweater!
