Bolle ULTIM8 Convertible Prescription Safety Goggles (ANSI Z87.1 + EN 166 D3/D4/D5)

The ULTIM8 is sold as a single chassis with two strap-and-temple modules. With the temple-arm module attached, it’s a wraparound safety glass; with the elastic strap module, it’s a sealed goggle. The lens, the venting, and the optical center stay in the same place — only the head-retention swaps. The convert takes about 30 seconds and uses the same captive screws across both modules, so you don’t need a second set of hardware to make it work.

Those are the EN 166 European secondary impact protections beyond ANSI. D3 is liquid splash and droplet resistance — covers chemical splash and food-processing environments. D4 is large dust particle resistance. D5 is fine dust resistance. Combined, that means the ULTIM8 in goggle mode is rated for chemical-splash / dusty / fine-particulate environments where a standard ANSI safety glass would fail. The glass-mode configuration carries the ANSI Z87.1 high-impact and OSHA marks.

Yes — single-vision, bifocal, and progressive lenses are all available. The ULTIM8 lens housing is moderately curved (less aggressive than a Wiley X JAKL shield), which means a ground-in prescription cut is possible. Polycarbonate handles most working-adult scripts; high-index 1.67 is available for stronger Rx where edge thickness matters. Lens cuts are repositioned for the frame’s curvature so the optical centers stay aligned with your pupils after conversion to either glass or goggle mode.

TPR — thermoplastic rubber — closed-cell foam. It’s hypoallergenic, sweat-wicking, and waterproof (won’t soak up perspiration the way open-cell foam does). The foam compresses against the skin to create the goggle seal in goggle mode, and lifts away clean when you convert to glass mode. It’s washable and replaceable; spare foam kits are available if the original wears.

Pick the ULTIM8 when your day involves both modes — lab work that occasionally moves into chemical-splash territory, food processing that sometimes requires sealed eyewear, mechanical work that occasionally requires fine-particulate protection. One frame, one prescription cut, one pair on the corporate roster. If your environment is exclusively goggle-territory or exclusively glass-territory, a dedicated frame is more comfortable in that single mode. The ULTIM8’s reason to exist is the conversion.