If you're tired of hard PVC hoses that crack or collapse when bent, try using silicone tubing instead. Once you use silicone tubing, you won't go back. Silicone is UV resistant; it does not age and deteriorate outdoors. The tube is very pliable and stretchy, allowing you to make tight turns and stretch it over barbs that are a little too big. This size (3/8 * 1/2) is quite large - perfect for medium size pumps and a myriad of fluid transfer equipment from lab work to brewing to goat milking. This tube has a thick 1.6mm wall and can accommodate a bend radius of approximately 2 inches - you can make a 4 inch U-turn without the tube collapsing when empty (5 inch U-turn is recommended). And what is so awesome about silicone, is that even if it collapse, it will spring back without any creases, because the material is incredibly stretchy and resilient to damage.