Urgent attention: We saw few buyers can not make it lights up, just with wrong operations,Not only to properly install the batteries, also please Put the switch "On"(Which black one) by battery box then stomping or Shaking feets items can be right works. TWO SIZE Fit ALL: Meduim size for Most girls US women 4-7 which fits foot length: 8 " / 20.5CM. Large size for Most mom and womens which size US women 8-10 and fits foot length: 9.45" / 24 CM UNIQUE DESIGN: Be the envy of all your friends as you parade these cozy unicorns around,super Soft and COMFORTABLE fluffy unicorn slippers MULTICOLORED: LED lights in the cheeks cycle through a rainbow of colors. Hidden zipper under each mane for accessing light. Battery not Included GREAT GIFT: All you unicorn lovers out there, you are IN for a huge treat! The one of a kind unicorn glowing slippers are going to light up your way. MILLFFY STORY A Independent brand based on more than 20 years OEM/ODM factory experience and cooperation relationship with the world's most famous Chain store’s brands of house slippers and cozy shoes, House shoes used at Home , Hospital SPA, Hotel, Plane and train. The elegant design also makes a great choice for a gift to your family and friends that also meanwhile a happiness and warmer lifestyle to your lovers Care Instructions: ·The product is both hand and machine washable. ·A water temperature Max 30 degree centigrade is recommended to achieve the best result. ·Air dry and flat dry. Never heating drying please ·Don't bleach. The chemicals in breach seriously damage fabric. Please Note: If you are not sure about your size, measure your feet from heel to toe in inches. Please find the below measurements for your reference. Measurement: *Size (US 5-6, UK 3-4, EU 36-37) fits foot length: up to 9.0” / 23CM *Size (US 7-8, UK 5-6, EU 38-39) fits foot length: 9.7" / 24.5CM *Size (US 9-10, UK 7-8, EU 40-41) fits foot length: 10.2" / 26CM *Size (US 11-12, UK 9-10, EU 42-43) fits foot length: 11" / 28CM Most important of all, we offer 101% no risk money-back guarantee if you are not satisfied with your purchase.