Heat/cold Packs

Ergodyne N-Ferno Warming Packs - 2" - 80 / BoxFeatures:Easy activation - simply openAll-natural ingredients heat up when they contact oxygenSeal from oxygen in Zip-Loc bag and reuse the next dayHand style warms up to 8 hoursGreat for cold storage workers...

N-Ferno 6995 Foot Warming Packs - 0.3" x 4.1" - 20 / CartonFeatures:To activate, just open the packAll natural ingredients heat up when they contact oxygenFoot style warms up to 6 hours