Sandbag Trainer System "sled vest" Heavier plates have more surface

Heavier plates have more surface area to distribute the stress

Size Circumference 8 2 1/4" 9 2 5/16" - 2 3/8" 10 2 7/16" - 2 1/2" 11 2 9/16" -2 5/8" 12 2 11/16" - 2 3/4"

The best all around fiber

If you're familiar with ouråÊBlack Zinc Wonder Bars

Sandbag Trainer System "sled vest" Heavier plates have more surfaceThe Only Time It's Ok to Sandbag It Picture a movie a spaghetti Western. A hard working farmer or a moxie filled 49er always goes to town in their flatbed wagon to pick up supplies at the general store. Inevitably, they always buy some bulging, burlap, grain sacks. They have to haul them, one by one, up onto their shoulder, walk out the general store, down the steps, out into the mud, toss them onto their wagon and return for the next one. They do