This is the Woolino toddler sleep sack with feet. From the website: 100% Merino Wool Lining / 100% Organic Cotton Outer REDUCE OR ELIMINATE SLEEPLESS NIGHTS - When baby sleeps better, so do parents. PREMIUM FABRICS for best comfort: Australian merino wool lining - 100% natural, luxuriously soft, and temperature regulating. GOTS certified organic cotton outer. Optimal merino wool REGULATES BODY TEMPERATURE so it can be used in all 4 seasons. Available in three sizes: 6-18, 18-36 months and 3-4T. Use over regular sleepwear to take the place of loose blankets. FOOT OPENINGS allow for mobility when child is awake. Generous size so child can tuck feet in when sleeping. Unzips from bottom for easy diaper changes. Machine-washable. ***Note price reflects the small tea stains that are visible in the picture. Function not affected.