evo.com | Reima Long Underwear Sets > For tiny humans with places to be. The Reima Taitoa Wool Base Layer Set mixes Merino wool, Lyocell, and a little stretch for a soft, temperature-regulating layer that can handle crawling, wiggling, and serious nap schedules. Flat seams keep things comfy, side panels keep them moving, and the extra room to grow means this set can stick around for more than one season. Soft, Flat Seams for Extra Comfort Elastic Waist 48% Merino Wool / 43% Lyocell / 9% Polyamide Room for Growth Reima garments have 2-3 inches of room for growth, so that they fit for more than just one year and allow for active play and movement. Reima recommends buying the size corresponding to your child's age. Size down if your child is small for their age. Side Panel on Sleeve and Body Part for Free Movement | Kid's Reima Taitoa Wool Base Layer Set Infants' 2027 - 12-13 Purple