The Bossless Bottle Cage lets you add a bottle (or three) to any bike—mounts or not. It was designed it so Tern bike riders can add extra water bottles to their seatposts or handleposts, but it works just as well on bossless track bikes, under-equipped road bikes, and long-haul tourers.
*22 – 41 mm in diameter
Dimensions: 145 × 90 × 73 mm (5.7” x 3.5” x 2.9”)
Weight: 72 g (2.5 oz)
Please note that this holds bottles VERY tighly and plastic bottles are quite snug to get in and out with this holder.