Spencil Big Cooler Lunch Bag + Chill Pack - TURTLE OF LIFEYour Big Cooler Lunch Bag is Machine washable! Washing it will prolong its life, although day to day, wiping it with a damp cloth will keep it in ship shape! Stand upright and make sure it dries properly before the next use. The more the lunch bag stays closed, the cooler it will stay! It's best to grab food out and close again when not using, so that icy cold goodness stays inside and keeps food fresh for the whole day! New, larger size 24cmx29cmx9cm