Your new favorite performance base layer is superlight, breathable and quick-dry. Any season, any activity HH LIFA® base layers keep you warm, dry and comfortable. This game-changing, hydrophobic LIFA® yarn technology delivers light insulation and wicking moisture management. Use it for everyday wear or high-performance activities. They've been excelling at HH® LIFA® base layer technology for 40 years. That’s why their base layers are the go-to choice for professional athletes.