https://boggbag.com/products/baby-bogg-brrr-cooler-insert-white From Bogg website: These insulated cooler bag add-ons are designed to fit the Original, Baby and BYO Bogg® Bags to transform your tote into a stylish cooler, keeping your drinks and snacks nice and cool! Baby Bogg® Brrr - Fills the entire inside of the Baby Bogg® Bag. Has a shoulder strap for use with or without the Baby Bogg® Bag. Since our soft side coolers are cut and sewn products we do not recommend using ice cubes that may melt over time, causing liquid to pool and potentially leak. Ice packs are recommended. Details and Sizing *Dimensions: 13in L x 5in W x 11.5in H *Material: 600D/polyester and insulated with closed-cell foam and lined with PEVA insulation material to keep the storage cold throughout; Weight: 13.5oz Cooler will come with a small insert to be used on the bottom of the bag for stability and a strap for carrying.