Engineered for winter performance, the SummitGrid Thermal Zip Top delivers breathable warmth with a soft polyspandex blend that moves effortlessly with your body. Its grid-textured performance fleece base layer ensures optimal insulation across changing conditions—whether you’re on the slopes or hitting a chilly hiking trail.
- Quarter-zip neckline for adjustable airflow
- Colorblock panels blend style with function
- Thumbholes add extra warmth and keep sleeves in place during activity
- Midweight construction balances comfort and layering ease
- Ideal as a performance fleece base layer for winter sports
How to maintain your base layer top? Simply machine wash cold and lay flat to dry to preserve softness and shape.
Joseph Hampton (verified owner) –
Perfect layering piece! I wore this thermal hiking in Colorado and stayed dry and warm all day.
Marcus Edwards (verified owner) –
Love the fit and colorblock style—thumbholes are a game-changer during early morning runs.
Susan Clark (verified owner) –
One of the best women’s base layer tops I’ve tried for skiing. Comfortable, breathable, and doesn’t bunch under my shell.