Compression and mobility
A snug compression fit and four-way stretch provide close support without restricting lifts, throws, or running movement.
Travel Guide
Explore with top rollers, duffels & packs.
Fleece
Jackets
Vests
Shirts
Ski & Snowboard Jackets
Ski & Snowboard Pants
Rain & Wind Jackets
Activewear
Shop All
Fleece
Insulated Jackets
Jackets
Vests
Shirts
Ski & Snowboard Jackets
Ski & Snowboard Pants
Rain & Wind Jackets
Activewear
Shop All
Hiking
Trail Running
Road Running
Casual Shoes
Casual Boots
Winter Boots
Slippers
Sandals
Bike
Climb
Rain
Shop All
Hiking
Trail Running
Road Running
Casual Shoes
Casual Boots
Winter Boots
Slippers
Sandals
Bike
Climb
Rain
Shop All
Hiking Clothing
Hiking Footwear
Backpacking Packs
Technical Daypacks
Hydration Packs
Kid Carriers
Water Bottles
Headlamps
Navigation
Trekking Poles
Shop All
Tents & Shelters
Sleeping Bags
Sleeping Pads
Coolers
Camp Chairs
Camp Tables
Stoves & Grills
Drinkware
Pots & Pans
Kitchen
Lighting
Hammocks
Shop All
Bike Maintenance
Bike Storage & Transportation
Car Racks
Bike Packs & Bags
Bike Lighting & Electronics
Hydration Packs
Water Bottles & Cages
Shop All
Carabiners
Quickdraws
Protection Devices
Belay & Rappel Devices
Ascenders & Descenders
Pitons & Hooks
Pulleys
Bike Racks
Ski & Snowboard Bags
Ski & Snowboard Boot Bags
Fly Fishing Bags & Luggage
Bike Travel Cases
Surfboard Bags & Packs
Sunglasses
Water Bottles
Blankets
Wallets
Water Filters & Purification
Travel Pillows
Power Converters
Audio
Ski & Snowboard Jackets
Ski & Snowboard Pants & Bibs
Midlayers
Baselayers
Ski Socks
Hats, Gloves & Mittens
SurgeLock Lightweight Compression Baselayer
In the field
A lightweight long-sleeve crew baselayer with a next-to-skin compression fit, four-way stretch, and UPF 50 protection.
Fast-drying coverage
The synthetic polyester-elastane knit moves sweat off skin, dries quickly, and provides UPF 50 sun protection.
High-output layer
The lightweight crew works alone in mild conditions or under a shell for running, riding, gym sessions, and winter training.
Construction and materials
- Material
- Polyester/elastane knit; 90/10 polyester-spandex blend
- Fabric weight
- Lightweight
- Fit
- Next-to-skin compression
- Stretch
- Four-way
- Sun protection
- UPF 50
- Neckline
- Crew
- Sleeves
- Long
- Fabric features
- Moisture-wicking, quick-drying and breathable
- Output
- High to mixed output
- Size options
- S, M, L, XL, 2XL, 3XL
- Color options
- Black, White
- Size chart scope
- Reference body chart XS–4XL; only selector choices are purchase options.Body measurements, not garment dimensions; sleeve measured from center back of neck to wrist
Fit, options and reference notes
- Chart fit advice
- Between sizes, size up for a relaxed fit
Cold start. Hot finish. This is your locked-in long sleeve base—built to hug hard, dump sweat fast, and stay ready when the pace spikes.
Key Features
-
Compression fit: Snug, stable hold to cut down on bounce and keep muscles supported through reps, sprints, and long miles
-
Quick-dry wicking knit: Moves sweat off-skin so you don’t get soaked-out mid-session
-
4-way stretch: Full range for overhead lifts, bar work, throws, and drive phases
-
UPF 50 protection: Sun-blocking coverage for long outdoor pushes
-
Lightweight thermal layering: Runs clean solo in mild temps, stacks sharp under a shell when it turns nasty
-
Warmth / Fabric Weight: Lightweight (high breathability, fast dry)
-
Material: Synthetic (Polyester/Elastane)
-
Intended Use / Output: High output → mixed output (training to winter layering)
-
Fit / Construction: Next-to-skin compression, knit, 4-way stretch
-
Garment Type: Long-sleeve crew baselayer top
Recommended Use
Run days. Ride days. Gym nights. Field grind. Wear it as a standalone top for high-output heat, or as your first layer when winter training goes full throttle.
Bottom Line
Strap in. Stay dry. Keep sending.
Men's Tops — Size Chart (XS–4XL)
Measurements reflect body measures, not garment dimensions. If between sizes, size up for a relaxed fit.
| Size | Chest (in) | Chest (cm) | Waist (in) | Waist (cm) | Sleeve* (in) | Sleeve* (cm) |
|---|---|---|---|---|---|---|
| XS | 32–34 | 81–86 | 26–28 | 66–71 | 31–32 | 79–81 |
| S | 35–37 | 89–94 | 29–31 | 74–79 | 32–33 | 81–84 |
| M | 38–40 | 97–102 | 32–34 | 81–86 | 33–34 | 84–86 |
| L | 41–43 | 104–109 | 35–37 | 89–94 | 34–35 | 86–89 |
| XL | 44–46 | 112–117 | 38–40 | 97–102 | 35–36 | 89–91 |
| 2XL | 47–49 | 119–124 | 41–43 | 104–109 | 36–37 | 91–94 |
| 3XL | 50–53 | 127–135 | 44–47 | 112–119 | 37–38 | 94–97 |
| 4XL | 54–57 | 137–145 | 48–51 | 122–130 | 38–39 | 97–99 |
*Sleeve measured from center back of neck to wrist. 1 inch = 2.54 cm.
Recommended for You
FAQ
How can I reach Alpine Extreme if I have questions?
Email [email protected] or use our contact form.
Do you offer free shipping?
Free standard shipping is available to most addresses worldwide. Availability, delivery estimates, and any expedited charges depend on the destination and order. International duties, tariffs, and customs fees remain the customer’s responsibility. See our Shipping Policy for details.
What's the return policy at Alpine Extreme?
Eligible return or exchange requests must be submitted within 45 days of the order date. Items must be new and unused with original packaging, tags, and accessories. General change-of-mind returns are not accepted. Return-shipping responsibility depends on the reason for the return. See the full Return & Refund Policy for exclusions and refund timing.
How long will it take for my order to arrive?
Orders are typically processed within 2–5 business days. Most standard shipments arrive within 7–14 business days after shipping, depending on destination and carrier conditions. Delivery estimates are not guaranteed.
Can I track my order?
Yes. Tracking details are emailed after shipment. You can also check order status with your order information through our order-tracking page.
What if there's an issue with my order?
Email [email protected] or submit the form on our support page. Report delivery issues within 60 days of the order date so carrier information is still available.
- Choosing a selection results in a full page refresh.
!