Our weighted vests are made up of the following:

Shell/Lining: 87% Nylon, 13% Spandex

BetterIce Gel - Fill 1: 45% Water, 35% Glycerol, 20% Acrylamide

Weighted Mass - Fill 2: 60% Iron, 40% Polyurethane

CoreFusion Gel (proprietary)

What’s what:

• Shell / Lining — 87% Nylon, 13% Spandex
  This is the vest’s outer + inner fabric. Nylon gives strength and abrasion resistance; spandex adds stretch so the vest hugs the torso, and the elastic sides can flex as you move.

• Fill 1 — 45% Water, 35% Glycerol, 20% Acrylamide → BetterIce Gel (cooling layer)
  This blend is used to create a soft hydrogel that stays pliable when chilled.
  • Water = the base, carries heat away from the skin’s surface.
  • Glycerol = keeps the gel flexible and lowers the freezing point (so it cools evenly).
  • Acrylamide = the monomer that’s polymerized into polyacrylamide inside a sealed pouch to make the gel network.

• Fill 2 — 60% Iron, 40% Polyurethane → The “weighted” material (mass)
  This is the load that makes the vest a weighted vest.
  Why this mix: iron provides dense mass; polyurethane holds it together in a quiet, low-bounce pad that slides into the vest’s pockets.

• CoreFusion Gel — (separate comfort/stability layer)
  Sits between you and the weights as a sand-infused, flexible interface. It’s designed to smooth pressure points and reduce tiny shifts so walking and resistance work feel stable.