Winter Cold Weather Sleeping bag: This Sleeping Bag will Keep you Warm and Rest in Cold Weather. The Comfort Temperature is 20℉-55℉, the Extreme Temperature is 0℉, the Limited Temperature is 15℉ | Big and Tall Design: 90.5*39inch Size Have Enough Room, Can Fit Most big and tall peoples | Anti-Clip Zipper: The Zipper Made With Anti-Clip Design, So You Can Using It Smoothly, Also It is Stronger Than the Normal Zippers | Waterproof and Breathable: The Outer Material is Made With Waterproof Matterial, You Can Using it Safely in Your Camping. Also the Inner Material is Flannel, it is Soft Warm and Breathable. | Buy With Oaskys Assurance: Within 3 Years After You buy Our Sleeping bags,if have Any Problems, just Contact us, we can change or refund to you.