The osprey tempest 20 womens backpack building on 10 years of iconic design the next generation of the iconic tempest series is here tempest 20 features clean modern design and stunning performance no matter what your adventure when it comes to a perfect all rounder the tempest 20 won39t disappoint after all it39s designed to cling to your back like a frightened monkey the cleverly designed new airscapetrade accordion foam backpanel combined with a seamless lumbar to hipbelt body