Thank you for viewing! I used this belly band for warmth during my fertility journey. It doesn't stretch as much as the description says...lol I wore it until about 6 months of pregnancy, but after that, it couldn't cover my growing belly, so I switched to a looser belly band. However, it has pockets, so it was convenient for putting in heat packs or charms! [Official Product Description] It stretches incredibly, so it's perfect for maternity wear. With a pocket for heat packs to gently warm your belly and lower back. Thin enough that you won't even notice you're wearing it, and it won't show under your clothes. Unisex, free size. Materials: Cotton, nylon, polyurethane Description: Sun Knit belly band. It stretches incredibly, so it's perfect for pregnant women! Made with Sun Knit's completely custom-made large circular knitting machine, so there are no vertical seams like you see in sewn items. The material uses 100% natural cotton yarn, making it thin and not bulky, and it won't show under your outerwear. It has a pocket to snugly fit a heat pack, so you can warm your belly or lower back. Suitable for both men and women. It has been used quite a bit, so please understand before purchasing! Feel free to comment!