PLUSH DESIGN ? Overstuffed appearance makes them extra cushioned for comfort. WIRELESS ? Easy USB plug-in charges the slippers that keep your toes toasty for up to 4 hours. SOFT AND COZY ? Super-soft material is warm and cuddly. KAWAII CUTE ? Oliver the grumpy cat features an adorable design with detailed embroidery. PERFECT FIT ? One size fits most, up to women’s size 12.