Luxja Ice Packs for Insulin Travel Case (Pack of 4), Reusable Ice Packs for Insulin Cooler (4 Pack)

PACKAGE INCLUDED: 4 pieces of ice packs (Filled with gel, non-toxic and odorless). DIMENSIONS: 6.9” x 2.5”.Fit for most portable insulin travel bags. COLD EFFECT: Keep the inside temperature at 2-8 degree about 6-8 hours (The cold preservation time might vary according to the external temperature.) USAGE: Put the insulin ice packs in the freezer about 7-8 hours before use. REUSABLE: Each gel pack can be used 2-3 years.