Skating roller skis with aluminum shafts and 6-inch inflatable tires. The XL150S is #1 in safety, ride comfort and versatility. The 6-inch pneumatic wheels can be used on surfaces where it’s impossible to ski with smaller wheels - such as dirt roads, crushed limestone trails, chip-and-seal pavement, and close-mowed grass. On asphalt and concrete the inflatable tires provide an extremely smooth ride. XL150S skis simply roll over debris that can stop small-wheel skis in their tracks. And because Speed Reducers and brakes are much more effective on inflatable tires than on solid rubber wheels, the XL150S gives you an extra safety margin in hilly and mountainous terrain. Despite the large wheel size, the XL150S is very light at only 2000g per pair, which is why so many skiers call it their favorite roller ski. These are bare skis without bindings or brakes.If you are over 200lbs, please choose the HD model! V2 XL150S Specifications:Wheelbase: 604mm/23.55”Weight per pair: 2000 g/4.57lbsGround Clearance: 31mm/1.2”Wheel Diameter: 150mm/5.85”Wheel Width: 31mm/1.2”Optional Speed Reducer: ATR150XLOptional Brake: B150XLReplacement Wheels: W150S