Hydraform™ Handheld The Handheld'S Ergonomic Configuration Allows Your Hand To Relax To A Natural Position - Eliminating Hand Cramping And Tension. The Quick-Adjust Strap Allows For A Custom Fit. Comes With A Custom-Molded, Bpa-Free, 12Oz. Hydraform Bottle. • Ergonomic Configuration Allows Hand To Relax In A Natural Position, Eliminating Hand Cramping And Tension • 40% Lower Profile For Comfort • Ultra-Comfortable Minimalist Strap Design Won'T Trap Sweat • Breathable Airflow™ Mesh Outer And Moisture-Wicking Ultra Soft Inner • Stretch-Free And Durable Bottle Harness • Adjustable Custom Fit With No-Slip Quick Hand Release • Includes Exclusive 12Oz. Hydraform™ Bottle • All Amphipod Bottles Are Recycling Symbol #4 Ldpe And Are Bpa-Free​​