Summer mesh fabric. The gray one has more thickness, so I think it can be used from spring to autumn. The blue one is unused. The gray one has been used about twice. Ice packs can be inserted in the head and back respectively. (Ice packs are not included.) Also, since the head and body parts are attached with Velcro, they can be used separately. ✨ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ No noticeable stains were found on the product, but there may be oversights. Please check the images for dirt, dents, tears, etc. Please refrain from purchasing if you are sensitive or seeking perfection. ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ＊Immediate purchase welcome / Silent purchase late at night OK◎ ＊First come, first served ＊Bulk purchases welcome ＊Free shipping! ＊Feel free to comment if you have any questions, not just about price negotiations, but also about minor things ❖ ＊Please check your profile once. ※To offer the lowest possible price, we may compress the item for shipping due to shipping costs. ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ #OsatoRoomProductList #OsatoApparel #OsatoBabyKidsProducts We have many other items such as miscellaneous goods, home appliances, smartphone cases, cables, DIY supplies, etc.* ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ ⋱⋰ Management number: