1.9 ounces and fits Crampons!!!
It's light. It's durable. All the crampon bags out there add 10 to 14 ounces to your pack. This one weighs 1.9 ounces on my scale! Kahtoola's website says this weighs 3.7 ounces, but I don't think my scale is wrong. Once cinched down, my pneumatic BD Sabretooth crampons barely fit, but all points are covered and I have not encountered a puncture. The bottom is open mesh to allow melted snow to drain, but it's made of a tough plastic type material and my frontpoints have not punctured through. 5 stars! Why? I challenge you to find a lighter crampon resistant sack out there. Toss is in your summit bag and don't get weighed down! One of my guides recommended the OR durable stuff sack as a crampon resistant bag. She used it for an entire year until she found a puncture during our trip. LOL. The OR durable sack IS tough, but the fabric on this one is BURLY.