The advantages are clear:
1) Full-length top cover with OUTLAST© ThermoculesTM. This technology keeps your feet more comfortable by absorbing excess body heat when you create too much and releasing it when you need it most.
2) Wider shape on the footbed. This insures that the footbed will fit all types of winter boots. This includes: ski, snowboard, telemark, nordic, and winter work boots or shoes.
3) Our exclusive patented shape and design. This means your feet will be comfortable and protected all day in whatever activity you choose to do. Trusted by feet worldwide. 4)Fits quickly and easily into boots. Simply trim and install for that personalized fit.

Maximum foot comfort and warmth for all winter outdoor activities so you can stay out longer. Providing these unique benefits:
a) Stay warmer, longer
b) Feet sweat less, stay drier c)Adapts to your thermal needs
d)Maximum, individualized comfort
e) Adaptive ComfortTM Rating: 200
#SIS7000-B-C-D-E-F

If you are a doctor, a physical therapist or an athletic trainer, please call for professional pricing.
See sizing chart below.