Unique design and easy to use. Designed by a vet, the Trusti tuber significantly reduces calf stress and discomfort - Soft, flexible tube, swallows easily and the calf struggling is minimized making the process very easy to learn. Flexible tube can be held in place with one hand. Large 4 litre capacity bottle. Transparent flexible tube makes it easy to clean and monitor flow. Ergonomic bottle handle - perfect for large and small hands. Reliable valve - fast flow with thick colostrum. Shown in trials to almost halve procedure feeding time.