5 1 1 is one of the outdoor brands owned by RoyalRobbins, a California military and police equipment manufacturer. RoyalRobbins has been manufacturing military and police equipment for more than 30 years. The related products of the Royal Robbins 5. 1 1 tactical series are deeply loved by American federal and state executive units. The most important thing is its simple and practical design, plus 100% cotton fabric, which is properly cut and sewn firmly, not too wide or too tight, and can still maintain sufficient durability under the conditions of possible violent operation and general cleaning.