These are also called weight belts for synchronized swimmers for training. The 1.5 LB are the best size for this.

Filled with hardened #5 round shot

RynoHyde neoprene cover for durability

Adjustable nylon strap 

High quality quick-release Nexus buckles

Perfect for adjusting your trim

Sold in pairs

Available in three sizes

• Pair of 1 lb each (p/n WA10)

• Pair of 1.5 lb each (p/n WA15)

• Pair of 2 lb each (p/n WA20)