Pyjamas are a key ingredient in most of the basic sleep routines. Kids' sleepwear is most probably in child-pleasing shades, fabrics, and patterns, and is naturally designed for sleep comfort and protection. While selecting sleepwear for your child, opt for smooth, breathable, chemical-free textures as such cotton. 

Resist yarn and other artificial fabrics that don’t allow you to breathe properly especially for kids. During winters you can add socks, or wear footed pyjamas. The sleepwear should be flexible enough since the kids love to run here and there wearing those sets, so you should not buy sets that prohibit movement.