I recently bought a kitchenaid which we love appliance powered by sodastream and discovered that it came with only one bottle

Was in need of new soda stream bottles and found these excellent quality and of course the price is awesome the bottoms dont come off i kinda wondered that myself as that would be neat for cleaning but i never need to wash them out deeply i just rinse them out with hot water or soapy water and that gets them cleaned up very well