The listings indicate compatibility with a range of Stanley bottles. They reference sizes across about 18–40 oz and also list variations such as 30 oz, 35 oz, 40 oz, and 47 oz depending on the specific sling. Check the individual product page to confirm fit for a particular bottle size.
Most listings state the slings are made from neoprene. Some descriptions also highlight durable or water-resistant construction in addition to the neoprene material.
They commonly include an adjustable strap for shoulder carry or attachment to a backpack and many listings add a dedicated phone pocket for easy access on the go.
Listings describe insulated sleeves or insulated carrier construction designed to help maintain hot or cold beverage temperatures for longer periods than an uninsulated cover.