I had one (white with purple trim) and the only real problem I had was the lid slipped miserably. It buckled with one strap but they've changed the newer design to two straps so it stays put now. I used it most often with the the heavy belt and no frame and it carried well at about 25lbs. I finally rigged a bladder to the frame and carried it that way with decent results. The best part of carrying it was the looks and questions you'd get from folks.