Size: S 21*26*8cm (recommended height: 80-110cm) and L 26*32*10cm (recommended height: 100-120cm) Special material: unique SBR diving material, delicate touch, water repellent; very light, can protect the baby's fragile cervical vertebra. User experience: comfortable carrying system with a layer of foam on the back to reduce pressure on your baby's back; adjustable straps to find the most comfortable length. Washing instructions: do not machine wash, do not soak too long, please dry as soon as possible after cleaning to avoid sun exposure. Note: There may be a slight smell due to tight packaging: just put the bag in a ventilated place and let it smell for a few days