Helikon US LVL 2 Thermal Grid Base Layer

Helikon US LVL 2 Thermal Grid Base Layer Top — Waffle/Grid Thermal Base Layer｜Quarter-Zip｜Thumbholes｜Tactical Underwear

The US LVL 2 Thermal Base Layer is a cold-weather essential designed for chilly and wet conditions. The interior grid/waffle structure traps a warm air layer for thermoregulation, while the close, base-layer fit plus moisture-wicking and quick-dry performance moves sweat fast during activity and retains heat at rest. Whether for tactical training, mountain hiking, or city commuting, it keeps you dry and breathable through long hours.

• Thermal Grid/Waffle Interior
  The 3D grid boosts thermoregulation: it speeds moisture transport and heat release while moving, then traps warmth when you stop. Adapt smoothly to changing weather and intensity.
  
  
• Lightweight Stretch Fabric｜Durable & Quick-Dry
  95% Polyester + 5% Elastane delivers 4-way stretch and a low-friction feel. Easy-care and fast-drying, ideal for multi-day trips and frequent wear as tactical underwear.
  
  
• Quarter-Zip Tall Collar
  Half opening allows instant ventilation or rapid heat lock-in. The stand collar covers the neck and pairs with outer layers to create a stable warm zone for dawn starts, night missions, and mountain temperature swings.
  
  
• Thumbholes
  Secure sleeves to prevent riding up and add back-of-hand coverage to reduce heat loss. Plays nicely with gloves and shells — a practical detail for tactical layering.
  
  
• Base-Layer Fit × Drop-Tail Hem
  A body-hugging silhouette reduces bulk and friction for freer movement with packs and during transitions. The subtle drop tail keeps you covered when bending, improving overall warmth.
  
  
• Breathable Wicking × Multi-Use
  Works as a tactical base layer / thermal underwear or a daily insulating layer: wear solo for mild cold, or under softshells and waterproof jackets to enhance cold-weather performance.
  
  

Helikon US LVL 2 Thermal Grid Base Layer Top combines warmth, breathability, quick-dry comfort, and stretch — a dependable base layer for outdoor hiking, tactical training, and fall/winter commuting.

FAQ

1. What advantages does Grid/Waffle fabric offer?
   The waffle structure creates a warm air buffer between skin and fabric, balancing insulation and breathability. Compared to flat-knit baselayers, it improves moisture wicking, quick drying, and overall thermoregulation.
   
   
2. What’s the function of the Quarter-Zip?
   Unzip for rapid heat dump; zip up to seal warmth and block wind. Adjust comfort on the fly based on intensity and weather.
   
   
3. Are the thumbholes actually useful?
   Yes. They hold sleeves in place, extend coverage over the backs of your hands, and reduce heat loss. They also layer cleanly with gloves and outerwear, improving layering efficiency.
   
   
4. Where does it shine?
   Fall/winter hikes, post-storm chill, field training, early-morning commutes, and travel connections. Wear solo for light insulation or under outer layers for a more stable system.
   
   
5. Will it feel too hot or clammy?
   The fabric’s moisture-wicking and quick-dry properties manage sweat efficiently. Vent with the zipper during exertion; zip up to retain warmth at rest.
   
   
6. Is the fit tight? Should I size up?
   It’s a base-layer fit. Choose your usual size to maximize wicking and layering performance. If you prefer a relaxed fit or plan to wear bulky outer layers, consider sizing up.
   
   
7. Can it serve as a mid layer?
   It’s designed primarily as a base layer. In milder conditions or during high-intensity activity, it can function as a lightweight mid layer based on personal comfort and your shell choice.
   
   

Size Chart

ⓘ How we measure: 1/2 Chest = garment laid flat at chest; Back = center back length; Sleeve = shoulder point to cuff. Manual measurement may vary by ±1–2 cm.
Base-Layer Fit: choose your usual size; size up if you prefer a relaxed fit or are layering under very bulky shells.

Care Instructions

• Wash at 30°C or below with mild detergent.
• Do not bleach / do not dry clean / do not iron.
• Line dry in shade; if tumble drying, use low heat.
• Wash separately from hook-and-loop (Velcro) and metal parts to reduce snagging.

Choose your size now and experience the Helikon US LVL 2 Thermal Grid Base Layer Top — warmth × breathability × quick-dry × stretch to keep you mission-ready from tactical training to alpine hikes.