Tax in CA, MA.
The Bracelet length of about 7.48" (19 cm) (not including buckle) open for 3.5-3.8m
Rope diameter 5mm, single rope pull of 400 pounds
Survival bracelets can be rapid dismantling of the rope as you need into a fully load-bearing I weight a lifeline.
Can make an emergency trap, tie temporary tents, wear a set of equipment to prevent the function is lost and so on, to do emergency