Fresh off of collabs with Asics and Converse, Cambridge, Mass.-based boutique Concepts has another sneaker project on the way. Taking to its Instagram account, Concepts teased its latest collab with Ewing Athletics on the 33 Hi. Captioned with the date 8.23.14, the sneakers feature a black and silver upper and a gum sole. The color scheme pays homage to Ewing's high school alma mater - the Caimbridge Rindge and Latin School, which is also located in the same town as Concepts.  Ewing himself will be on hand at the store to meet and greet customers, when the sneakers launch this Saturday.