MSR Evo Tail Black. Simply attach an optional 6 inch tail for additional flotation in soft snow or when carrying a heavy pack. This quick adjustment easy to do in the field allows one pair of shoes to adapt to a wide range of loads and snow conditions. Compatible with the Denali Evo and Denali Evo Ascent Snowshoes. Specifications for MSR Evo Tail: Manufacturer: MSR Weight: 12.2 oz Features of MSR Flotation Tails - Evo 6in: For use with MSR Denali Evo and Denali Evo Ascent Snowshoes Package Contents: MSR Flotation Tails - Evo 6in MSR 5650: Evo Tail Black