First off, I am a pelican case fanatic. I have 12 different case and I use all of them. I bought this as an addition to my new Jeep Rubicon. I am using this care for my camera gear, compasses and few cigars on the go! On top of being an outstanding case, the off road wheels add a rugged and more stable base for trucking this case everywhere and over everything. The oversized wheels and bulked up base added a little weight but so worth it. I also have the lighter more airline friendly 1510, I love that one too but for off roading and adventure this 1510M rocks.