Unlike some of the other slip-over grippers I've worn, the STREAMtrekkers were much more rugged right out of the box. Heavy-gauge chains hold the stud rings to heavy-duty rubber outer bands that wrapped very tightly around my boots. The studs are actually what the company calls "traction beads." They're strung on aircraft-grade steel cables, made of case-hardened steel, and feature 6 points per bead that grip from all angles. In a full day of stomping around the Salmon, they didn't slip, come off my boots, or shift positions on the soles in the slightest. I was pretty impressed by their performance.