In the manufacturing process Jelen uses two technologies: adhesive footwear technology and directly injected polyurethane footwear technology.

Special military footwear quality is assured by using water - resistant membrane designed in accordance with SYMPATEX technology, which enables feet to breathe by preventing water to breach in the inside, while simultaneously allowing any vapour to evaporate.

SYMPATEX the innovative hi-tech climate system for footwear. Created for people with high expectations - independent of the weather and outside circumstances, individual for each situation, for each challenge. SYMPATEX the 100% waterproof and breathable system for protective footwear. For the highest levels of wearer comfort and protection.

SYMPATEX is a hydrofoil, polyester membrane without pores, only 15 microns thick (1/16mm), which is extremely light and highly elastic, all of which ensures both 100% water - resistance and extreme airiness. SYMPATEX membrane fitting process is constantly monitored by the licensing company, and all products are subject to rigorous tests: stitching test, ripping test, wearing out test, twisting test and simulation walking test.