Skis

Finely polished planks strapped to the boots of the wearer,skis allow for swift crosscountry and down-hill travel in snow. It takes 5 minutes to don or doff skis (though the ties can be cut as an action, the skis are then considered broken). In difficult terrain caused by heavy snow, you can take the Dash action as a bonus action across level ground or the Sprint action as a bonus action if going downhill. While wearing skis you have disadvantage on Dexterity saving throws unless you choose to throw yourself prone