2-24 months The outside is in fair shape with some yellowing near the top/shoulder snaps. The inside has a few small surface layer holes that only go through the inner lining and not the outer lining that are pictured. Neither affect the use of it and we loved it. Washed in wool detergent and hung dry. Nonsmoking pet friendly home. From the Woolino website….. Are you worried about which weight baby sleep bag to use and whether your baby will be too hot or cold while sleeping? With Woolino, there is no need to worry. The exceptionally breathable Merino wool naturally regulates baby's body temperature, which helps your child to sleep safely and comfortably through the night. It gives you peace of mind and a good night's sleep as well. This amazing baby sleeping bag also saves you buying different sleep sacs for different seasons because you can use it year-round. FEATURES & BENEFITS Premium Natural Fabrics: silky soft Australian merino wool lining & organic cotton outer Can be used in all 4 seasons - suitable for room temperatures 63-75F (17-24C) Merino wool regulates body temperature unlike any other fiber, keeping baby warm when it's cold and cool when it's hot Two-way zipper for easy dressing and diaper changes Zipper guards to protect child's skin and to discourage child from chewing on the zipper Woolmark certified merino wool; GOTS certified organic cotton; All the fabrics and accessories are OEKO-Tex 100 certified (tested for 100 harmful substances)