Patagonia Men's R1&reg; Fleece Pullover Versatile R1 fleece, with its high/low grid pattern, provides excellent stretch, warmth, fast wicking and great breathability in a variety of temperatures A lighter weight, micro-grid fabric on inner collar, underarm gusset and Variable Conditions Cuff improves breathability and dry times where you need it most Refined technical fit with offset seams for comfort under outerwear and packs Variable Conditions Cuff has discreet, on-seam thumb loops for added coverage; a spiral-stitch construction allows sleeves to push up easily without constricting forearms Body: 6.8-oz Polartec Power Dry 93% polyester (41% recycled)/7% spandex. Inner collar, underarms and cuffs: 5.4-oz Polartec Power Dry 92% polyester (54% recycled)/8% spandex