These cotton water bottle holders are super useful for keeping track of a water bottle. 
 
They are appx 3.25" diameter and 6.5" tall, which fits most water bottles.
Strap lengsths are: Small - (40") fits most children through age 9, Medium (45") fits most older kids and small adults, Large (50") fits most adults, XLarge (55") fits most xl adults
Please message to order a custom strap length or specific bottle size.