The Helly Hansen Dry Stripe Crew Long Sleeve Base Layer is the original technical base layer, recognised by professional athletes around the world. HH DRY works as your second skin, and is the heart of the 3-Layer System. LIFA Stay Dry Technology makes this a versatile and adaptable baselayer for all conditions. The close body fit enhances moisture transportation, making the perfect year-round insurance for you to perform at your highest level.