The small TWIST bottle 450 with an optimized easy squeeze thanks to a softer material and new bottle cap with a high flow, self-sealing and leak-proof valve and optional dirt cover. Strong magnets attract, center, and latch different modules magnetically to the base. The mechanical locking keeps the module securely attached to the frame. This ensures comfortable and safe handling, even under strain. TWIST modules can only be removed with one simple clockwise “TWIST” to the side. Even small and tight frames that offer no space for conventional bottle holder cages can be equipped with a water bottle.