Cloudfoam is a midsole and sockliner cushioning technology that has been implemented into a range of Adidas shoes; three of which are shown in the below image. Adidas describe cloudfoam as providing two benefits: step-in comfort and superior cushioning. Adidas primarily use Cloudfoam in the midsole of their shoes, but some shoes also have a cloudfoam sockliner; while other Adidas shoes use an OrthoLite sockliner instead of Cloudfoam. Cloudfoam has also been implemented into Adidas 'slides' (flip-flops / sandals): the Cloudfoam material is placed into the footbed. Adidas have referred to their flip-flop Cloudfoam technology as: "Supercloud" cushioning.
However, by and large, Cloudfoam is placed into Adidas sneakers. Cloudfoam sneakers are fairly inexpensive - compared to high-end Adidas sneakers - and cost in the region of £40-60. There is a vast array of Cloudfoam sneakers - as shown above - and some of the shoes you can search for are as follows: Cloudfoam Xpression W; Cloudfoam Ilation Mid; Cloudfoam Vs City; Cloudfoam Groove; Cloudfoam Speed; Cloudfoam Ultra Zen; Cloudfoam Flow W; Cloudfoam Sprint; Cloudfoam Flyer W and Cloudfoam Saturn.