Big Kids Size 5 Hunter Chelsea Boots Non smoking household. The Original Kids Chelsea Boot is a mini version of the classic Hunter Chelsea, handcrafted from natural rubber. Constructed with the Hunter Original tread pattern for great grip, it features a 100% recycled polyester lining and is 100% waterproof. Elastic side gussets and a pull tab at the back make light work for little fingers, giving them the independence to take on every rainy-day adventure.