Ski poles for back country and touring skiing. These MTN Alu S3 Ski poles covers all the needs you may have for your ski poles when going on the backside of the mountain for off piste adventures. It is length-adjustable for various snow conditions and terrain variations with an easy-to-use lock mechanism. They come with large snow baskets for powder snow as well as handstraps which are part of the S3 Freeski grip that is releasable in case the pole gets caught while skiing. The lower shaft is made with carbon and is 14mm diameter and the upper shaft is made with aluminum with 16mm diameter.