Yeti Yonder Water Bottles are available in 20 oz, 25 oz, 34 oz, and 50 oz sizes. Bottles are BPA-free and 50% recycled plastic. Bottles are 100% leakproof and 50% lighter than Yeti Rambler Water Bottles. All sizes are compatible with all Yeti Yonder accessory caps. Sizes 20 oz and 25 oz are compatible with the small bottle sling and 34 oz are compatible with the large bottle sling. Note: Bottle slings sold separately.