Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
Chill Boys Bamboo Soft Long Underwear
  • In stock, ready to ship
  • Inventory on the way
Regular price $38.00 Sale price$30.95 Save 19%
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Shipping calculated at checkout.

Size chart
Waist(in)
BRAND XS SMALL MEDIUM LARGE X-LARGE XX-LARGE
Bike Athletic 28-29 30-31 32-33 34-36 37-39 40-42
Calvin Klein 24-26 28-30 32-34 36-38 40-42 44-46
ExOfficio -- 30 32-34 36-38 40-42 44-46
Mack Weldon -- 28-30 31-34 34-36 36-40 42-46
PSD Underwear 24-26 28-30 32-34 36-38 40-42 44-48
Rhone 27-29 29-30 31-33 34-36 37-39 40-44
Stance 28-30 30-32 32-34 34-36 36-38 38-40
Tommy Hilfiger 30-32 32-34 34-36 36-38 38-40 40-42

Our premium butter-soft bamboo rayon fabric keeps you warm and comfortable when the temperature drops. When you wear Chill Boys long johns, you'll work out more. You'll walk to lunch more. You'll be more comfortable lounging around the house. It's a better way to enjoy the cool weather months. Temperature regulating Inner-leg vents provide cool airflow where you need it most. 

  • 95% Bamboo Viscose, 5% Spandex, Polyamide anti-chafing vent
  • Easy access fly closure
  • Super soft bamboo long underwear for men
  • Temperature regulating base layer - Perfect men's leggings for work, sleep or play
  • Comfortable long underwear and cold weather gear for exercise apparel, hiking clothes, camping gear, fishing, running, hockey, and working out
  • Made of premium bamboo rayon fabric - Warm winter base layer
  • Flexibility, comfort, and support for the boys
  • Inseam length 31 inches (one length fits most)
Bamboo long underwear black long johns men's thermal underwear

Model is protected under applicable copyrights trade marks and other proprietary including without limitation intellectual property rights and international treaties.

Shipping Policy

  • Local Warehouse: orders ship the next business day.
  • Remote Warehouses: processing varies by location — most ship within 2–3 business days, with a range of next-day up to 5 business days.
  • Once your order ships, you'll get a tracking number by email.
  • Orders of $60 or more shipping within the U.S. ship free.
  • Estimated transit: 2–5 business days (USPS Ground Advantage) for U.S. orders.
  • International orders: 5–14 business days via DHL eCommerce, depending on destination and customs processing.
  • If your order hasn't arrived within 2 weeks of the estimated delivery window, contact us and we'll sort out a replacement or refund.

Questions? Reach us anytime at byron@byronsbritches.com.

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