SPARTAN Strong Pancake Sandbag

Not durable

Buyer beware. The velcro seal does not hold up to over the shoulder tosses. If you are only planning on doing carries, you are probably fine. But if planning on doing over the shoulder throws, I would not buy (unless you want a bag that is 10 lbs lighter by the end of your workout and a bunch of sand to clean up).

Spartan sandbag

This is the exact same product you use in the race. Good strong quality fabric and easy to fill with sand. Highly recommend for any one training for a race.

Spartan 70 lbs sand bag

Came as described, fit 70 lbs of sand without issues. No leakage noted, have used multiple times since buying it without any problems.