The Baby Bogg Bag Brrr Cooler Insert fills the entire inside of the Baby Bogg Bag and will transform your stylish tote into a stylish cooler, keeping your drinks and snacks nice and cool while you enjoy the warm sun! The bag is made with polyester and insulated with closed-cell foam and lined with PEVA insulation material to keep the storage cold throughout. It also has a shoulder strap for use with or without the Baby Bogg Bag. These soft side coolers are cut and sewn products and because of this it is not recommend that you use ice cubes that may melt over time, causing liquid to pool and potentially leak. Ice packs are recommended.