Keep warm this winter with Zissou & Spike active wear inspired by our favorite friends — dogs! With their easy-going, luxurious and active lifestyle in mind, Zissou & Spike features witty graphic t-shirts and glamorous track suits. Dog lovers will be able to stock-up without feeling guilty since the high-end collection donates a portion of its revenue to Best Friends Animal Society, a non-profit organization devoted to improving the lives of homeless animals. Animal-loving celebrities like Sienna Miller, Katherine Heigl, Kristen Bell, Tori Spelling and Hayden Panettiere are all fans of the trendy line. Starting today, PEOPLE readers will get 25% off the entire line by entering “” at checkout. Offer expires January 19th.

What we love from Zissou & Spike:

This Diamonds and Dogs tee, with discount $74 (originally $98), is a must-have for all dog fashionable dog owners.