Simpson Racing Equipment DSUBK3X Dna Slt Btm Blk - 3x

The Simpson Safety DNA SLT Base Layer Bottom is a performance fire-resistant underlayer designed to disappear beneath a racing suit. Built with a breathable knit construction to keep drivers cool under pressure, it features ultra-flat seams that eliminate friction points and reduce irritation during long stints. Dual-certified to SFI 3.3/5 and FIA 8856-2018, this base layer bottom delivers serious fire protection without sacrificing comfort or fit. This listing is for the 3X-Large size in Black.

Key Features:

• Dual-certified to SFI 3.3/5 and FIA 8856-2018 fire protection standards
• Athletic fit for a close, non-bunching profile under a suit
• Full-length cut for maximum coverage
• Breathable knit construction for improved airflow and driver comfort
• Flat seams reduce friction and pressure points during extended use
• Color: Black | Size: 3X-Large
• Sold individually

Engineered for drivers who demand both certified protection and all-day wearability, the Simpson DNA SLT base layer bottom pairs with the matching top and headsock to complete a cohesive, competition-ready base layer system. This product is subject to California Proposition 65 warnings.