Here's what other sites are saying:
Wrap style bottle holder grips bottles tightly for a secure hold. Works on 3" - 4" diameter bottles.
- Vargo Outdoors
EK Wrap-A-Bottle Cat - Serious retention for serious sized bottles! Our designer webbing wraps around large bottles and features the convenient carabiner. Use it to attach water bottle to desired gear.
- Massey's Outfitters
EK Bottle Cat
Guyot Designs SplashGuard
Platypus Bite Valve Cover
Nalgene Insulated Water Bottle Sleeve
CamelBak Fresh Reservoir Filter
$15 - $19
MSR SweetWater Prefilter
$1 - $9
Osprey Hydraulics Cleaning Kit
$9 - $24