Good news to those who worry about keeping their gas magazines warm enough to work well in colder conditions with this GBB Magazine Warmer Bag in stock at 18 Airsoft... "Want to get your GBB Game on 365 days of the year but hounded and defeated by General Winter? Now you can play all-year round with the new GBB mag warmer.

Powered by a common power bank and with 3 temperature levels to set your perfect indoor competition temperature or adjustable to evolving outdoor climates. Molle backed with additional Molle QD (Quick Detachment) Velcro backing making it most verstatile for to attach to your vest, molle panel or backpack attachment.

Will Fit 2x standard M4 Mags and 2x Pistol mags.

Battery not included."