I went to order a tx-250 tonight and was studying the weights. Some of the reported weights on Clark's site don't really make any sense. As someone pointed out last night the nx-250 is lighter (3- lbs -12 oz) than the tx-250 reported weight (4 lbs-2.5 oz) with the weather shield. They should be roughly equal. Last night I attempted an explanation but I'm pretty sure it was wrong. The camo version of the tx-250 with weather shield is listed as 3 lbs-13 oz. I think thats probably the correct weight but I guess I'm going to have to call them to get it verified. I suspect that the listed weight for the tx-250 non-camo with weathershield is just incorrect. I'm a backpacker and weight is one of the primary criteria in selecting my gear.