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Intraknit Seamless Long-Sleeve Top - Women's
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Body-mapped ventilation keeps the Intraknit Seamless Long-Sleeve Top cool
The Intraknit Seamless Long-Sleeve Top is knit as one continuous piece, so there's no seam construction to chafe or rub during a long, high-output effort. Ventilation is built directly into the knit rather than added as a separate panel, placed where the body actually needs to release heat instead of guessing at a universal spot. Underneath that construction, a blend of Merino wool, TENCEL Lyocell, and recycled polyester handles temperature regulation and odor resistance, built to work year-round rather than just in the cold. A regular fit keeps room to move without adding bulk under a jacket or on its own.
What Our Gearhead® Experts Are Saying:
"I run long efforts in this and never once think about where a seam might be rubbing, because there isn't one. The knit ventilates exactly where I run hot, so I stay comfortable through the whole distance instead of adjusting my layers halfway through."
Details
- Seamless long-sleeve top for high-output training
- Intraknit construction eliminates seams and chafing
- Body-mapped ventilation targets heat where it builds
- Merino and TENCEL blend regulates temperature year-round
- Recycled polyester content lowers virgin material use
- Item #SWLZ9KL
- Responsible Collection
- Recycled/Repurposed
- Material
- 55% merino wool, 25% recycled polyester, 18% TENCEL lyocell, 1% elastane, 1% other fiber
- Insulation Weight
- lightweight
- Fit
- regular
- Style
- long-sleeve crew
- Activity
- hiking, running, training
- Manufacturer Warranty
- limited 2 year
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Frequently Asked Questions
What fabric blend does the Smartwool Intraknit Seamless Long-Sleeve Top use for high-output training?
The fabric is 55% Merino wool, 25% recycled polyester, 18% TENCEL™ Lyocell, 1% elastane, and 1% other fiber. Merino supports moisture management, temperature regulation, and odor resistance during runs and workouts.How should I choose a size in the Smartwool Intraknit Seamless Long-Sleeve Top?
It has a regular fit, with women’s sizes XS (0–2), S (4–6), M (8–10), L (12–14), and XL (16–18). Choose based on your measurements; the regular cut leaves room to move and layer without excess bulk.How does Intraknit™ construction help during runs and workouts?
Intraknit™ seamless construction uses minimal seams designed to reduce chafing, while integrated ventilation supports movement and comfort. That combination suits high-output training where heat and repetitive movement can make a top feel distracting.Is the Smartwool Intraknit Seamless Long-Sleeve Top warm enough for skiing or cold-weather hiking?
This lightweight base layer is designed for breathability and temperature regulation, rather than standalone insulation. For cold or wet conditions, pair it with a midlayer and shell; its 55% Merino wool blend supports moisture management and odor resistance during exertion.How should I wash the Smartwool Intraknit Seamless Long-Sleeve Top?
Machine wash it on a cold, gentle cycle and wash separately; tumble dry low and cool iron as needed. The fabric includes 18% TENCEL™ Lyocell, so avoid bleach and do not iron decoration.