21 oz Standard Mouth Water Bottle Size:One Size Molded heel design holds your

Molded heel design holds your foot securely in place

15" Diameter - 47" Circumference

Waterproof - Provides a water-tight seal that won’t peel or crack over time

Plus it packs into its own stuff sack

which promotes proper technique that decreases wrist fatigue

21 oz Standard Mouth Water Bottle Size:One Size Molded heel design holds yourVersatile, middle of the road size TempShield insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours Durable 18 8 Pro Grade Stainless Steel construction BPA Free and Phthalate Free Compatible with Standard Mouth Insulated Sport Cap Lifetime Warranty