3D mechanical arm temporary tattoo stickerThere are two kinds size.M size : 19 cm X 12 cm for the lower arm.L size : 21 cm X 23 cm for the upper arm. Non-toxicUsually keeps 1~5 days according to different size， temperature， body position and so onusing method is on the pictureIf you want to keep the sticker for a long time， please note the following:1. Do not touch water in the 2 hours after finishing.2. Do not scrub too hard stickers when take a shower.3. Bath time not too long， too wet will affect the robustness of stickers.