3 Months To 6 Years. Make Potty Training Easier. Save Tiny Knees When Crawling. Make A Great Second Layer Under Trousers Or Coats(For Arms) To Keep Out The Cold Without Having The Bulk Of Clothes Around Their Tummies. Will Pull Over Socks To Keep Out Draughts. Look Trendy And Great For Dance Class. Encourage Children To Pull Huggalugs On All By Themselves, Even Over Shoes. This Will Help Them To Have A Little Independence As They Learn To Dress Themselves.