Compatibility: The wearable breast pump bag measures 10.2x6.9x8.3 inches and includes 1x double-layer breast pump bag, 2x ice packs. This pump backpack is compatible with Willow/Elvie/Momcozy/Medela wearable breast pumps and the main compartment is just compatible with spectra breast pumps. Cold Compartment: The water-resistant lining of the lower breastmilk cooler bag is leak-proof and wipeable, and with two blue iceboxes, it can hold up to 6 bottles up to 6 ounces (180ml), insuring your breastmilk for hours like a “mini fridge”. Easy to Carry: The wearable pump bag comes with a removable crossbody strap that can be switched between crossbody and shoulder carry, and a top handle with a carabiner that can be carried by hand or hung on a stroller, providing greater convenience for moms on the go. Organized Storage: The main compartment at the top has two large water-resistant lined elastic pockets and two mesh storage pockets can store most wearable breast pumps and their accessories on the market, the front and back side pockets and both side pockets of the bag can keep diapers, breast milk storage bags or other mother and baby supplies well organized in the bag. Full Protection: The wearable breast pump cooler bag is made of nylon on the outside with a padded soft sponge layer in the center to protect the wearable breast pump from bumps and scratches. Great companion for breastfeeding or working moms at work or on the go, whether you are at the airport, picnic, park, shopping or in the office, this bag will provide you with the convenience you need. Breast pump backpack