Made of a wool blended yarn these slippers are both warm and cozy as well as machine washable. The wool blend keeps them feeling soft even on bare feet. Secured with functional shoe laces Faux suede sole with a fleece insole Choose between traditional ankle height that comes just above the ankle or choose tall to that is double the height and comes about mid calf. The best way to determine size is to measure the foot flat and add a 1/2" for wiggle room. [Sizing] Approximate age to shoe size measurements as below 4” - 0-6 months 4.5” - toddler size 2/3 (6-12 months) 5” - toddler size 4/5 (12-24 months) 5.5” - toddler size 5/6 6”- toddler size 6/7/8