Here's what other sites are saying:
The Amphipod Hydraform 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.
With an updated, streamlined storage pocket and insulation sleeve, the Amphipod Hydraform Handheld Ergo-Lite water bottle comfortably holds essentials and helps keep your beverage cool while you run.
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, 20oz. Hydraform Bottle. I found the HydraForm Handheld superior in ease of carrying to any handheld system I have tried. The strap adjusts well for use while wearing gloves for cold weather runs.-Ultra Running MagazineErgonomic configuration allows hand to relax in a natural position, eliminating hand cramping and tension 40% lower profile for comfortUltra-comfortable minimalist strap design won't trap sweatBreathable AirFlow mesh outer and moisture-wicking ultra soft innerStretch-free and durable bottle harnessAdjustable custom fit with no-slip quick hand releaseIncludes exclusive 20oz. Hydraform bottleAll Amphipod bottles are recycling symbol #4 LDPE and are BPA-free
Amphipod Hydraform Handheld Thermal-Lite
Amphipod Hydraform Bottle
Nalgene 32 oz Wide Mouth Tritan
$8 - $11
CamelBak Chute .6L
$10 - $13
GSI Outdoors Infinity Dukjug 1L
$8 - $9
Klean Kanteen 64oz Wide
Bison Designs Bottle Bandit
Platypus Platy Bottle
$13 - $16