Clothes and shoes
Hakei
Try for gorgeous, one-of-a-kind women's shoes and accessories bags and jewelry. Its tiny shop, and its displays are stunning, with walls lined in delicate shoes and silk scarves arranged by color.
Nice-day, Nice-things
Trip Donosti
San Sebastian is known as a stylish city and an image-conscious one, so it is stuffed with high-end shops. Peruse La Parte Vieja the old part of town for cool boutiques filled with quirky designer gear. There are fantastic shoe stores--I remember one in particular whose rainbow of amazing women's shoes in the window changed daily--and sources for that inimitable bold Spanish fashion.
Designer clothes for men are much more difficult to find than for women.
Most shops are freestanding, but there is an enclosed shopping mall La Bretxa that has the cineplex as well as the city's lone McDonald's as well as a collection of high street shops in the modern Nuevo Mercardo San Martin complex (http://www.msanmartin.es).
Some of the designer shops worthwhile visiting are:
Darlington
Original Spanish designer accessories at affordable prices.
Dam
Kukuxumusu
See Buy section in Spain