It's big enough to hold a 500ml plastic bottle. The inside uses a cooler sheet. It has D-rings so you can attach a handle. If you'd like the shoulder strap shown in the third image, please comment. It's 120cm long. It will be included for an additional 300 yen ( ^-^)ノ∠※。.:*:・'°☆ This is handmade, so it's not a perfect product. Please understand. m(__)m It is also listed on other sites, so it will be deleted when sold out, but please understand. m(__)m