During Japan’s pre-industrial era, there was an on-point warrior class known as the samurai. As we all know, these gents came to play, carried swords and wore helmets. The hardest part of their headwear was called the Hachi. Well, your Geoprene Hachi Squid Lid might not stop a Hattori Hanzō blade. But it will block a coldwater headache like the hardest helmet in the Shogun’s army.
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Testimonial
I'm not a huge hood fan but when I need one the Squid Lid does the trick.
- Joel Tudor
Solution-Specific Features
- GLUED AND BLIND STITCHED 2MM
- HYDRASILK
- REAR TIE LOOP
- TITANIUM COATED GEOPRENE
Keeps the water out and the warmth in.
Hydrasilk lining inside and out.
Allows you to tie off your Squid Lid to hang off the back when not in use.
Titanium coated Geoprene textured skin provides durability and prevents evaporative heat loss.
Technology in this Ichiban Product
- Geoprene is derived from 99.7% pure limestone. It’s warmer (98% water impermeable compared to the standard 69%), lighter and lasts longer than oil-based neoprene. It’s also kinder to Mother Nature since it wastes less biomass and comes from a sustainable resource—not petroleum. Geoprene is exclusive to Yamamoto Corporation and Matuse, Inc.

