spelenium 8 5mm unicore 1Particularly suited to caving and spelunking in difficult conditions, this lightweight semi static type B rope has many advantages. Its thinness (8. 5mm) and remarkable handling will facilitate the descent of lighter users while maintaining the characteristics of a type B certified rope. Its great maneuverability allows light climbers to move easily and its reduction in water shrinkage of over 50% makes it an ideal partner in wet caves.