The AS in Cressida AS stands for anti-shock and is your best friend for you long distance and multi-day missions! The anti-shock tips ensures a reduction of impact forces and thus relieves muscles, joints and ligaments making your body feel fresh and ready for another day in the mountains. It's adjustable telescopic style makes it the perfect option for trekking pole style shelters, be that tents or tarps. The telescopic nature also makes it easier to stash away compared to a folding pole, taking up less space on the outside of your pack.