Living in the South, it's a must to have these. They really work. They are stretchable and will fit any size. I've used the same bracelet 3 nights now and still working great. They are extremely lightweight and you can wear on your wrist or upper arm or sometimes I wear around my ankle. Don't take chances of being bite all night and contacting West Nile virus , get these mosquito bracelets. Safe for any age. I highly recommend these.