Men’s Thermal Underwear Set Fleece Lined Base Layer Top & Bottom

Cold-Season Layering Basics

This thermal base layer set is designed for consistent insulation for cold-weather wear. Its fleece-lined interior is designed to hold warmth while maintaining a compact and flexible feel suitable for varied activity. Made from an 85% microfiber and 15% spandex, the material offers thermal layering compared with standard cotton blends. Flatlock stitching creates a smooth, low-profile seam structure that fits easily under outerwear. Intended for active layering or daily cold-season use.

Flexible Fabric Construction

Constructed with moisture-moving fibers, the material transfers moisture away from the skin surface for dry-feel wear. Its four-way stretch construction allows multi-direction flexibility without restricting movement. The fleece interior helps distribute insulation evenly, and the smooth exterior reduces friction when worn under additional layers. Whether used outdoors or indoors, the fabric maintains its structure after repeated washing.

Made for Regular Rotation

The set includes a pull-on closure for simple wear. Its compact fabric packs easily into luggage or gym bags for travel. Machine washable, it maintains elasticity and softness when air-dried. The snug fit helps keep the layer in place during everyday movement. Suitable as a base layer under winter jackets or for general indoor use.

Product Benefits:

• Thermal Layering: Fleece-lined interior designed for insulation
• Moisture Control: Material designed to move moisture from skin surface
• Flexible Construction: Four-way stretch fabric for multi-direction flexibility
• Smooth Feel: Soft fleece interior and low-profile seams
• Easy Care: Machine-washable compact material
  

Specifications:

• Fabric Composition: 85% Microfiber, 15% Spandex
• Lining: Fleece Interior
• Closure Type: Pull-On
• Fit Type: Snug Fit
• Stretch Type: Four-Way Stretch
• Moisture Control: Moisture-Moving Fabric
• Care Instructions: Machine Wash; Do Not Tumble Dry
• Sizes: S–XXL
• Recommended Use: Layering for outdoor or indoor wear
  

• Order cut off: 1:00 PM EST
• Processing time: prepared within 1-2 working days (Monday to Friday)
• Delivery window: estimated 3-4 working days (Monday to Friday)
• Free delivery: for all USA orders

• Return period: 30 days from the delivery date
• Refund timing: Up to 7 days from receipt and inspection
• Return postage: Paid by the customer
• Exchanges: Available within the return period