Screw On, Spill-Resistant Lid. Split Ring Attachment. Not For Climbing. Meets FDA Requirements. BPA Free. Hand Wash Recommended. The 20 Oz Aluminum Tundra Bike Bottle is designed for cyclists and outdoor enthusiasts seeking hydration on the go. Its durable aluminum construction ensures it withstands the rigors of biking while the screw-on lid prevents spills. The split ring attachment allows for easy carrying on backpacks or bike frames. Ideal for long rides, workouts, or casual outings, this bottle keeps you refreshed wherever you go.