The TriRig Multi-Bottle BTA Rail is a great way to customize your between-the-arms hydration setup, allowing you to mount 1, 2, 3, or 4 bottles and accessories exactly where you want them. Compatible with standard bottle cage spacing, it integrates with a wide range of cages and mounting positions, making it easy to dial in the perfect ergonomic arrangement for nutrition and hydration. Crafted from a solid 10mm billet of T6-6061 aluminum and finished with a durable hard-anodized coating, the Multi-Bottle BTA Rail delivers lasting strength and reliability. The BTA Rail is a unique way to take everything you need with you on your ride.