honeycomb 58 vents safest bike helmet, ventilation folding helmet AU-SV888
Georgia Tech Yellow Jackets Schutt XP Replica Helmet - Honeycomb – Green Gridiron, Inc.
A packable EPS free bicycle helmet made of recycled plastic - MaterialDistrict
Full Brim Hard Hat, Custom Silver Honeycomb Design – AcerPalUSA
The paper bike helmet you pop in your pocket: Honeycomb design that could be bought for just £5 wins its inventor a major engineering award | Daily Mail Online