The Flak Sack SPORT by the Loctote® Industrial Bag Co. is the theft-resistant bag for athletes & active lifestyles. Our customers told us that in addition to all the features of the original Flak Sack, they wanted a lighter-weight more water resistant bag with cut resistant drawstring ropes. By utilizing an innovative woven textile, we were able to engineer a bag that is 25% lighter than the original Flak Sack, yet still maintains a cut level 4. It’s like an ultra light portable safe for your valuables. It was designed to accommodate the lifestyles of people who practice, play & are on the go who need their essentials kept safe, but don't want any unnecessary weight or bulk.