Women's 350g Heavyweight Silk & Cashmere Thermal Underwear Set | Crew Neck Long Sleeve Base Layer
Key Highlights
- 350g Heavyweight Dual-Layer Construction – premium thick fabric (max thickness) with warmth rating C+++ for superior cold-weather insulation
- Silk & Cashmere Infused Inner Layer – inner blend of 5% mulberry silk + 3.7% cashmere + regenerated cellulose + acrylic + spandex for ultra-soft, skin-friendly comfort
- Breathable & Stretchy Outer Layer – outer blend of 47.9% lyocell + 45.8% acrylic + 6.3% spandex offers excellent breathability and 4-way stretch for all-day comfort
- Classic Crew Neck & Long Sleeve Design – versatile crew neckline and full-length sleeves make this set perfect for layering under sweaters, coats, or outdoor gear
Specifications
| Fabric Composition (Inner) | 5% Mulberry Silk + 3.7% Cashmere + 48.1% Regenerated Cellulose Fiber + 34.4% Acrylic + 8.8% Spandex |
|---|---|
| Fabric Composition (Outer) | 47.9% Lyocell Fiber + 45.8% Acrylic + 6.3% Spandex |
| Fit Type | Form-Fitting Stretchy Fit |
| Target Audience | Women |
| Sizes Available | XS-XXL / US 4-14 |
| Colors | Black,Purple,Pink,White,Beige,Taupe |
| Weight | 350g (Heavyweight) |
| Warmth Rating | C+++ (Maximum Warmth) |
| Design Style | Heavyweight Thermal / Cold-Weather Base Layer / Silk & Cashmere Infused |
| Occasions | Cold Winter Days, Ski Trips, Outdoor Activities, Everyday Warmth, Layered Under Outfits |
Size Reference – Women's Thermal Underwear Set
This chart applies to women's thermal base layers. View our complete women's size guide.
| Intl. Size | US Size | Bust (cm/in) | Top Length (cm/in) | Waist (cm/in) | Pants Length (cm/in) | Suitable Weight (lb) |
|---|---|---|---|---|---|---|
| XS | 4 | 80 / 31.5" | 57 / 22.4" | 72 / 28.3" | 89 / 35.0" | 95-110 |
| S | 6 | 84 / 33.1" | 59 / 23.2" | 76 / 29.9" | 91 / 35.8" | 110-125 |
| M/L | 8-10 | 88 / 34.6" | 61 / 24.0" | 80 / 31.5" | 93 / 36.6" | 125-145 |
| XL | 12 | 92 / 36.2" | 62 / 24.4" | 84 / 33.1" | 95 / 37.4" | 145-170 |
| XXL | 14 | 96 / 37.8" | 62 / 24.4" | 88 / 34.6" | 97 / 38.2" | 170-190 |
Manual measurement tolerance ±1-2cm. The form-fitting stretch design allows for comfortable layering under most clothing styles.
Styling & Everyday Wear
Women's 350g Heavyweight Silk & Cashmere Thermal Underwear Set - Crew Neck Long Sleeve Base Layer, Breathable Stretchy Cold-Weather Underwear for Winter, Ski & Everyday Warmth
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Frequently Asked Questions
Q: What makes this thermal underwear different from regular sets?
A: This 350g heavyweight set features a dual-layer construction with silk and cashmere in the inner layer, offering superior warmth (C+++ rating) with added softness and breathability.
Q: How should I wash and care for this silk & cashmere thermal set?
A: Hand wash cold with mild detergent, or machine wash on a gentle cycle in a mesh laundry bag. Hang to dry away from direct sunlight; avoid tumble drying and high heat.
Q: Is this set suitable for very cold weather?
A: Yes, the 350g heavyweight fabric with maximum thickness and C+++ warmth rating is designed for cold winter days and outdoor activities like skiing.
Q: Does this thermal underwear offer enough stretch for comfort?
A: Yes, both layers contain spandex for excellent 4-way stretch, allowing for a form-fitting yet comfortable fit that moves with your body.
Thermal Underwear Care Instructions
To preserve the warmth and soft feel of your silk & cashmere thermal set, follow these simple steps. Learn more about silk & cashmere care ›
- Hand wash cold (≤30°C / 86°F) with mild detergent
- If machine washing, use a gentle cycle in a mesh laundry bag
- Do not use bleach, enzyme detergents, or fabric softener
- Do not soak longer than 10 minutes; do not wring or twist hard
- Hang to dry in shade – no direct sunlight or tumble drying
- Low iron (≤110°C / 230°F) with a pressing cloth if needed
