5 /5 Luke Julian Mai: Jacks Chestnut is one of the best stores in San Francisco. They offer a variety of clothes and gear, ranging from their own custom printed shirts(super soft) to 47 brand Merch as well. Thats not even the best part. Jacks hats are rare, and hard to find. Anytime they have a new hat I make sure to grab it quickly, as I know it will sell out and be impossible to find after! Camo 49ers hats to random vintage teams, they all look good. I recommended everyone come and visit if they get the opportunity.