Just purchased and haven’t used because i dont have the right size stanley, Product Features Dress up your favorite water bottle with this innovative, stylish sling, perfect for the gym, walks, or hikes. A front zip pocket keeps your phone handy, and the side opening gives easy access to smaller items—like those earbuds you can't go without. Featuring a built-in magnet designed to attach to compatible metal gym equipment, you'll never sweat misplacing your items. With room for gym gear, cards, and keys, it's the hands-free way to stay organized… and hydrated, obviously. Note: The strength and holding power of the magnet can depend on a few things—like what you're attaching it to. The surface material, the metal's density and thickness, and how the weight is packed and distributed inside the bag can all affect its performance. Exterior: Adjustable strap to carry shoulder or crossbody, Side web handle to carry hand-held, Strong Magnet on back panel, it can attached to metal gym equipment, U-zip cargo pocket (18cm x 12.5cm), Secure slip mesh pocket inside cargo pocket Interior: Drawstring and cord lock closure to cinch around water bottle, Fits up to 40 oz. water bottles with handle (Hydrojug) STRONG MAGNET: Attach your water bottle to metal gym equipment with the strong magnet on the back panel (Holds up to 6 lbs) KEY LEASH: Never lose your keys again thanks to our built-in keychain CARGO POCKET: U-zip cargo pocket (7.1" x 4.9") designed to fit up to an iPhone 16 Pro Max