Bail Out System - Designed to make unlacing the TLS system even easier.
This pull tab is placed in the middle of the TLS lacing system outside of the boot to allow for effortless unlacing.

TLS 5 Twin Lacing System - Easy ace engagement and release combined with the low abrasion of their Dyneema laces are the key factors in this highly reliable zonal lacing system.

AIR Dampening - Nitro's AIR suspension pocket at the heels suck up hard landings and keeps your heels from getting bruised.

Therminator Shield - This thermal layer between sole and liner will reflect your body heat and keep your feet warm all day.

Armored Spine - Anatomically shaped and 3D molded heel reinforcement to provide even boot flex and a long lasting heel fit.

Flex Link Panel - A flexible panel between upper and lower shell ensures an even flexing, responsive boot without the bulk.

Molded TLS Lace Handles - These lace handles on at the cuff provide better grip and comfort for even more lacing power.

Cloud 9 Liner - • Pre-Molded Thermacell: for perfect out-of–the-box fit

• Hi-Heel Frame: more response and a precise fit

• Re/Lace Liner Locker: for a snug and easy to operate closure

• Latex Memory Pads: for a lifetime heel fit

• Flex Toe: expands for custom toe box fit

Ortholite® Dual Density Footbed - Ortholite® compresses less than 5% with excellent levels of shock absorption and energy return.
Fit and comfort inside the boot will remain consistent for the life of the footbed.
The unique open cell structure also creates a moisture management system to mve moisture away from the foot leaving your feet drier.

ILS Liner Lacing - Nitro's Internal Lacing System (ILS) features a lacing harness firmly connected to the boot shell.
This harness snugly wraps around the liner securing it to the shell for precise lacing and fit.

RE/LACE Liner Locker - The RE/LACE Liner Locker provides easy adjustability of your inner boot lacing once your boot shell is already tightened by just pulling up on the lace handle.
This lets you re-tighten your liner and foothold throughout the day without having to untie your boots.

Heat Moldable - Nitro's liners are constructed from Thermacell material using Nitro specific casts and latex heel pads.
This ensures a long lasting fit and comfort without fatigue.
All Nitro liners can be thermo-molded for an even more custom fit.