Medium filler bags

Current Stock:

  • Filler bag for medium Workout Sandbags
  • Special original design fills entire outer bag
  • Sand moves as a whole with outer bag
  • 4" wide hook/loop closure for no leaks
  • Extra-tough 1050D ballistic nylon fabric
  • Easily holds up to 100 pounds (45 kg) sand
  • Sand not included - Outer bag not included
  • 21" x 38" ( 53 x 97 cm) size laid flat
  • Filling instructions are on THIS PAGE

training sandbags filler

Our filler bags do NOT leak.  They have been proven so by gyms, boxes, pro and college teams over the years.  They are of an original design that allows ALL of the sand load of the outer bag to be held inside ONE filler bag. To change weight, just add or remove sand.  Using only one filler bag per outer bag gives a tremendous advantage to the instability of the whole experience.  The sand load of the filler bag shifts as a whole with the outer bag.  This gives you the best sandbag training experience!

fitness sandbags at games

Photo above of our "Snake" bag in action at a CrossFit Games in Kansas City KS. Our filler bags are the same constructon but a different shape.

fitness sandbags filler review

Above is a screenshot of an emailed review of one of our filler bags.