Waterproof and breathable has never felt this good. The Terrex Primeknit Rain Jacket has a soft, easy-moving feel with a hybrid design that breathes and vents heat where you need it most. adidas Primeknit offers four-way stretch for a natural range of motion. RAIN.RDY keeps you dry through snow and rain. Its lightweight build packs down small for easy stowing when the sun decides to shine.