Across International -25C to -15C shipping cubes, with rechargeable PCM’s, are used to safely ship products with unique temperature constraints. These eco-friendly thermal boxes provide up to 20L, or .7 cubic foot of storage space. With Vacuum Insulated Panel (VIP) solid insulation to maintain the integrity of your products within their desired temperature environment. These cubes are ideal for reducing shipping costs or for circumstances in which unexpected delays may occur.