An ultra soft sleep sack made of the same Cotton Flannel fabric as the popular SwaddleDesigns blankets with a soft satin trim. The 2-way zipper opens from the top and the bottom (patent pending). It's a wearable blanket that can be used when baby is ready to transition from swaddling. Has a TOG rating of 0.7 which is appropriate for temperatures of 72-78 degrees F caused by warmer weather. Please note: most medical experts recommend a sleep environment of 65-70 degrees F. Sized for babies up to 32 inches long. 100% cotton flannel, machine washable, proudly made in USA.