The Alkali RPD Visium Helmet Features:

• Sleek ventilated design for maximum comfort
• Strategic air vent placement for better breathability
  
• Dual-density padding for a proper, snug fit
• Polyurethane formula shell provides maximum protection with less weight
• Removable plastic ear covers with foam comfort pads
• Quick single screw length adjustment
  
• HECC approved and certified
• Available as shown in Black

Alkali RPD Visium Sizing:

Small:          20.4" to 22.4" (52 cm to 57 cm) Circumference  or  6 1/2" to 7 1/8" Hat Size
Medium:     22.4" - 23.7" (57 cm to 60 cm) Circumference  or  7 1/8" to 7 1/2" Hat Size
Large:          23.7" - 24.8" (60 cm - 63 cm) Circumference  or  7 1/2" to 7 5/8" Hat Size

NOTE:  Proper helmet fit and care is vital to provide the best possible impact protection.  Never wear a helmet that fits
incorrectly and never continue using a helmet after an impact.  For more information regarding proper helmet fitment
and care, please consult your helmet's owner manual.