RZMAYIS 32/40oz insulated water bottle carrier bag with phone pocket (Green) — crossbody sling for hiking & walking

The essentials

If you often carry a 32oz or 40oz water bottle on walks, gym sessions or day trips, this RZMAYIS carrier bag is a practical “grab-and-go” setup. It’s designed around the idea of keeping your bottle snug in a dedicated holder, while adding extra space for the stuff you’d usually end up juggling (phone, keys, small essentials).

On paper, the main appeal is simplicity: insulated inner lining to help protect your drink’s temperature, a crossbody strap so you can keep your hands free, and a zipped storage layout that’s meant for quick access.

That said, it’s not the sort of bag that replaces a full daypack. You’re buying a bottle sling/carrier first, and the storage is there to support it rather than take over the role of your bag.

What matters most for day-to-day use

The bag is built for everyday carry during active outings. It includes a carry strap and an adjustable shoulder/crossbody strap, so you can switch between holding it in-hand or wearing it across your body.

For the bottle itself, the dimensions are listed as 11 x 13 x 24 cm, and it’s stated to fit most water bottle brands of 32oz and 40oz. That broad “most bottles” promise can be handy, but it’s also worth noting that fit can depend on your bottle’s exact shape and how bulky the cap or handle area is.

Inside, the design includes a drawstring closure for the main compartment, which should make it easier to reach your bottle quickly without fully unpacking everything. During a typical walk, you’d expect to open the top quickly, grab the bottle and slip it back in, rather than unzipping a large flap every time.

Insulation and protection (and where it can fall short)

The interior insulation is described as an aluminium layer meant to help keep your drink at a more ideal temperature. That’s useful if you’re heading out in changeable weather and you don’t want your drink to go from “fine” to “lukewarm” as quickly as it might in an unprotected carrier.

It’s also made with water-resistant polyester outer fabric, and the bottle area is positioned as scratch-protecting. In other words, it’s not just carrying—it's also trying to reduce scuffs and surface wear from day-to-day use.

Ten out of ten though? Probably not. Insulated bottle sleeves vary a lot, and without more detail on insulation performance, you should treat this as “helpful protection” rather than something that can reliably outperform proper thermal coolers on long durations.

Storage that actually helps

There are four pockets in the design: two zippered pockets intended for items like your mobile phone and keys, plus two side pockets for snacks or other small supplies.

This kind of layout makes sense for short-to-medium outings where you want essentials close by. If you’re walking the dog, hiking a local trail, or popping to the gym after work, the phone pocket is the sort of feature that can save time—rather than digging through a larger bag.

Worth considering: if your phone is on the bigger side, you’ll want to check that it will fit comfortably in the zip pockets as described (there’s no exact pocket sizing provided).

Who it’s for, and who should skip it

It makes sense if you want a crossbody water bottle carrier for 32oz or 40oz bottles, and you like the idea of having your phone and keys on hand while you move. It’s positioned as suitable for work, walking, hiking, camping, beach trips, gym use and other outdoor activities.

It might not be a great match if you carry a bottle size outside 32oz/40oz, or if you want a bag that’s primarily for general storage. This is a bottle sling first, if you’re expecting a bigger “all-in-one” day bag, you may feel limited.

Also, if you’re the kind of buyer who expects highly specific measurements for pockets and the exact bottle fit, you may find the “fits most bottles” wording a little too broad.

Key takeaways

• A crossbody bottle carrier made for 32oz/40oz bottles with drawstring top access.
• Insulated inner lining is meant to help maintain drink temperature, plus scratch protection.
• Two zipped phone/key pockets and two side pockets for snacks or small supplies.

Is it worth it?

Buy it if your priority is hands-free carrying during walks, hiking or gym trips, and you want insulation help plus pocket storage for essentials like your mobile and keys. It’s the kind of practical add-on that can make bottle-carrying less of a hassle—especially when you don’t want a backpack.

Skip it if your bottle isn’t a 32oz/40oz style fit, if you need highly precise pocket sizing for your phone, or if you’re expecting strong insulation performance over long periods. In that case, you may be better served by a more purpose-built insulated cooler or a larger bag that isn’t centred on the bottle.

Mini FAQ

Does it fit 32oz and 40oz bottles? It’s stated to adapt to most water bottle brands of 32oz and 40oz, though exact fit can still depend on your bottle’s shape.

Can you carry it crossbody? Yes. It includes an adjustable shoulder strap for crossbody carry, plus a carry handle/strap option.

Where do you put your phone and keys? There are two zippered pockets intended for your mobile phone, keys or similar items.

Is the outer material water-resistant? The bag is described as made from water-resistant polyester fabric.

Is it suitable for outdoor activities? The listing suggests use for walking, hiking, camping, beach trips, gym and other outdoor activities.