Two adjustable toggles tighten at the arm and wrist to ensure the Mittz stay on, and the over-arm design allows Mittz to be put on last. There are five layers of warmth in every mitt, and the styles for newborn to 24 months have a thumbless design for easy on and off and warmth. The design for ages 2 to 7 has a thumb added with an extra layer of protective rubberized fabric in the palm and thumb. The appliqué matches Stonz Booties and Hatz for a coordinated look. The Mittz are machine washable and dryable.