Highly suggest anyone looking for a sandbag to check out Lindon Fitness & the Wreck Bag. Just used these in an OCR race in MA and they're great! So great, I ordered a 50# to ship out to MN where I live. No sand inside the bag (propriatary mix), softer, easier to carry and extremely durable. Check 'em out http://www.lindonfitness.com/ My profile pic gives an idea of how they look when you're carrying it (and how I look when I have my "fun pain" face on