Time Out says
Not your average consignment store, Bonum specialises in upcycling secondhand and vintage clothes and accessories wares into new fashion pieces. You'll find items like denim pants re-modelled into jackets, and bandanas turned into Japanese-style happi coats. This Shimokitazawa shop is a smaller offshoot of Bonum's main store in Harajuku, but you'll find some good deals here as the store offers a rack of 'sample' items at deeply discounted prices.
2-30-3 Kitazawa, Setagaya-ku