Thank you for viewing! ☆ Quoted from Nishimatsuya Online Store ≪Target Age≫ From around 2-3 months old when the neck is stable (※ Not for newborns) ≪Set Contents≫ Main body x 1 Cooling gel packs x 2 ≪Size≫ Approximately H640 x W330mm ≪Material≫ Polyester 100% Cooling gel pack contents: Water, thickening agent, antifreeze ・Cooling sheet usable in strollers, car seats, and baby carriers ・Cool head and back! For outings on hot days and preventing heatstroke ・3D mesh material keeps you feeling fresh ・Machine washable for cleanliness ・Maintains a comfortable temperature below 26°C for 3 hours (※ Effectiveness may vary depending on usage conditions.) ・Made in China ⚠️ May not be attachable depending on the shape of the stroller, car seat, or baby carrier. Will be sent via anonymous Yu-Packet Post, so please check the profile before purchasing.