BUILT BY YOU: each Planet Bottle is crafted using materials collected from community projects in schools. TRAVEL FRIENDLY: Planet Bottle is lightweight, robust and completely leakproof; it fits most car cup holders, and its lid doubles as a cup. HUMAN FRIENDLY: this innovative bottle is 100% BPA free, and wont release toxins or odours, even with hot drinks. USEFUL INFO: BUILTs water bottles come in 4 distinct colours; they are microwave safe and include a 12-month guarantee.