XGO's Phase 1 Lightweight Clothing, our lightest weight option designed for ultimate comfort and performance. This collection includes thermal undergarments and boxer briefs, available in both Flame Resistant (FR) and performance materials. Shop a variety of styles, from long sleeves to short sleeves, crafted for durability and protection, all proudly made in the USA.

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XGO Lightweight High Performance T-Shirt. Lightweight Shirts. High Performance T-Shirt. Performance T-Shirt. Moisture Wicking. Anti-Odor. Anti-Microbial. UPF (Sun Protection) Rating 35+. 100% USA-Made! 100% Made In The USA! Berry Compliant!

Lightweight Performance T-Shirt (PH1)
$ 43.00
$ 43.00

Lightweight FR T-Shirt (FR1)
$ 83.00
$ 83.00

Lightweight FR Cooling T-Shirt (FR1)
$ 94.00
$ 94.00
Sale

Clearance: Lightweight FR Cooling Mesh T-Shirt (FR)
$ 26.00
$ 26.00
$ 105.00

Lightweight Performance LS Crew (PH1)
$ 49.00
$ 49.00

Ultra Lightweight Logo Hoodie (NonFR)
$ 60.00
$ 60.00

Lightweight FR LS Crew (FR1)
$ 90.00
$ 90.00
Sale

Clearance: Lightweight FR Cooling Mesh LS Crew (FR)
$ 27.00
$ 27.00
$ 110.00

Lightweight FR Flight Deck Mock (FR1)
$ 95.00
$ 95.00

Lightweight Performance Boxer Brief (PH1)
$ 42.00
$ 42.00

Lightweight FR Boxer Brief (FR1)
$ 62.00
$ 62.00

Lightweight Performance Cooling Mesh Boxer Brief (PH1)
$ 46.00
$ 46.00
Sale

Clearance: Lightweight FR Cooling Mesh Boxer Brief (FR)
$ 18.00
$ 18.00
$ 75.00

Lightweight Performance Thermal Pants (PH1)
$ 47.00
$ 47.00

Lightweight FR Thermal Pants (FR1)
$ 88.00
$ 88.00

Lightweight Performance Neck Gaiter (PH1)
$ 18.00
$ 18.00