Soft, comfortable and versatile for a wide variety of active pursuits, the Merino 125 Cool-Liteâ„¢ Sphere III Long Sleeve Tee features our lightweight Cool-Liteâ„¢ merino jersey. Cool-Liteâ„¢ - Breathable and lightweight fabric blend designed to help keep you cool. Crew neck improved for enhanced fit. Offset shoulder seams to prevent friction. Drop tail hem for added coverage.