Upper and lower strap set for foot ascender HARKEN NINJA / NOTCH JET STEP ascender.
Fully adjastable. 

Description:
1) adjustable buckles on the strap for the possibility of replacement at the attachment points of the ascender
2) extended central blocking axes to eliminate slipping and ensure a stable position
3) strength stitching of the strap joint covered with a sleeve and overstitched against slipping from the most stressed place - the boot inner edge
4) adjustable length of the lower strap - the same blocking buckle against slipping as on the side of the ascender
5) long red coded release loop of upper strap - easy handling with gloves
6) easy tightening and releasing of the upper strap - 2 steel D-rings - strong enough to hold position due to simple shape while allowing easy release
7) 2 strong rubber O-rings to secure the free end of the upper strap