To impart a function safely and stably sliding in a riding state of an occupant to an on-snow slider towed and slid by a snowmobile or the like.

In this slider, a slider body (a) comprises a planarly-inflated bottom air chamber 2 and a peripheral wall air chamber 1 formed along the peripheral part of the bottom air chamber 2 around the bottom air chamber 2, while a tow rope (b) towing the slider body (a) is attached to the slider body (a). By towing the tow rope (b) by an on-snow vehicle such as the snowmobile, the slider slides with the lower face of the bottom air chamber 2 as a ground contact face.