The trek berry burst bar uses completely natural ingredients which are both delicious and rich in protein here youll find gluten free oats soya crispies and chunks of raspberries smooshed together to make one wholesome energy snack its a splendid choice for those keeping fit and training for sporting events natures best ingredients go into the making trek bars with berry burst being no exception the taste of real berries mixes with the delightful consistency of dates and raisins alongs