NEW. Delicious, crispy crackers, ideal as a snack. Source of fibre. 34 Calories per slice. Delicious, crispy crackers packed with simple, wholesome ingredients that provide a source of fibre which helps to keep your digestive system healthy. There's an occasion for every Thin! Nibbling at lunchtime! Sharing with friends! Dipping before dinner! "I love Ryvita Thins as a tasty treat between meals or dunked into guacamole. Delicious!". Fern Britton. Each slice contains Calories 37 2%, Sugars 0.2g This carton can be recycled. HIGH IN FIBRE AND 37 CALORIES PER SLICE.