Specifically for mountain bikers and road cyclists who need very look on weight and / or pack size, the Twofish is first choice. He accepts in principle almost any LED flashlight (whether ALDI, Fenix, LedLenser) to as long as the diameter fits about. It is important that the lamp is mounted in its center of gravity on the holder so that the breakdown torque is minimized. Then the light remains stable even at very uneven passages in their position. The Velcro straps keep very well and when not in use can be removed and stowed the Twofish quickly. -> Clear Kaufenpfehlung.