Happy Feet Mens and Womens Standard Sneaker Slippers AS SEEN ON ABC'S "SHARK TANK" If these slippers look familiar to you, maybe you caught our Shark Tank episode! LIKE WALKING ON PILLOWS Our slippers feature a 1" dense foam rubber, no skid bottom. Made for indoor use only. FREE RETURNS AND EXCHANGES Whether your order is shipped by Amazon or by us here at Happy Feet, returns and exchanges are always free. GIRLS/WOMEN: Toddler T7.5-T12, Small T12.5 - 5, Medium 5.5-7.5, Large 8-10, X Large 10.5-12.5, XX Large 13 and Up BOYS/MEN: Toddler T7.5-T12, Small T12.5 - 4, Medium 4.5-6.5, Large 7-9, X Large 9.5-11.5, XX Large 12-13