Upper/Liner:

• 3D molded chassis molds precisely to match the curves of your foot
• Multi-density shin guards and calf guards were researched and developed for maximum flexibility and comfort
• New Extreme seal top gasket provides a secure/comfortable seal around leg to keep debris out of boots
• Internal molded padding wraps around the inside calf support for extra impact absorption
• Lateral internal support
• Fold over burnguard
• In-molded strap receivers
• Soft touch aluminum buckles now have a new shape making them more secure
• Buckle bases pivot on their axis allowing perfect alignment between buckle and strap
• The soft, grippy rubber insert on the buckle makes for a more comfortable use in any condition, wet or dry, hot or cold

• New for the F3 outsole is an improved compound for increased durability. The tread design is inspired by the highly successful herringbone design, originated on the Fox Forma Pro.
• Cushioning/shock absorbing midsole with new compression molded EVA outsole insert on the inside of the foot reduces large shock and vibration, lessening fatigue to the ankle, knee and back
• Outsole design
• Seamless interior