Product size: 15.2 * 6.4 * 3.2CMProduct efficacy: Persist for one minute every day for tight and flawless beautyHuman muscles; firm skin, fade fine lines, make skin younger and clearerShrinks pores and leaves skin flawless.Instructions:1. Place the ice roller in the refrigerator fresh-keeping room 30 minutes in advance, taking care not to freeze it.2. After washing your face and finishing the basic skin care.3. Roll and lift the ice roller along the contour of the face for 1-2 minutes.4. Wash and dry after use, or store in the refrigerator for future use.Product material: Ice muscle roller is a convenient and practical handheld dropWen sedation tools. A selection of 50 ice-ball filled ice muscle rollers,Sustainable ice feeling for up to about 5 minutes; roller made of PC material with ABS plastic handle.