Pure Legs, Bums and Tums. Focus points: Targets common problem areas. Slim and tone. Increase stamina and endurance. Exercise type: Toning. Duration. Pure Loop Wooden Legs. by Claus Breinholt. An even more functional design, without arms; pure. A large subfamily that is available with the same Loop frames . Binuance develops the colours, material and technology of the Pure Loop family. The extremely elegant two-colour one-piece shell is obtained from a single.