The Summer Infant By Your Side Sleeper is designed with baby's safety and comfort in mind. Its sturdy metal frame protects baby from parents rolling over, and mesh sides offer better air circulation to keep baby comfortable. For added convenience, it features a removable, washable pad and folds compactly for travel. The By Your Side Sleeper is recommended for babies from 0-3 months. ... -----Mesh sides provide clear view of baby and help air circulate to prevent overheating. -----Folds flat for storage. -----Sturdy metal frame and soft, comfortable cotton fabrics. -----Includes mattress pad and fitted sheet.