1. PERFECT SIZE AND LONG LASTING --THis -pack Ideal size for everyday use. Each ice pack measures 5.6"x 3.7"x 0.59". The slim, lightweight and durable design keeps your insulated lunch bag colder longer THAN other ordinary ice packs. 2. MAKE LUNCH TIME EVEN BETTER! A y lunch decides your productivity for the rest of the day. So, let's keep your meal cool, crisp and delicious till lunch time with BLUE ELE COLD PACKS. For your convenience, we have packed 4 pieces together, so you can use them individually or in multiples for higher cooling efficiency.. 3. SAFE FOR EVERYDAY--Useable VILOSA Ice Packs are leak-proof, sturdy and made of BPA- food-grade HDPE shell, filled with non-toxic gel. 4. SUPER VERSATILE. These extra thin, stackable and lightweight cooler ice packs ze quickly and fit perfectly with most lunch boxes, insulated lunch bags, bento boxes and coolers. Also, you can use them in your gym bag, diaper bag, insulin case, lunch pail, meal prep container or picnic basket.