If you want a long-term sleeping bag for your child, then you're holding out for a Hilo - The Regatta Hilo Boost Expandable Sleeping Bag, to be specific. Choosing the right sleeping bag is important, which is why this Regatta expanding sleeping bag is designed to grow with your teenager and provide quality support right through to adulthood. It has a 25cm expandable base that allows you to change the length of the sleeping bag from 170cm (5.5 foot) to 195cm (6.3 foot), providing a roomier feel. The Hilo is lightweight and compressible, which has a cosy mummy design and 6 tog rating, making it great for spring, summer or indoor use.