San Francisco-based Timbuk2, popular for its contemporary, streamlined bags that come in a variety of shapes and sizes, has introduced a new line of packs named after local bars. And, since the crew behind Timbuk2 loves an excuse to party, they're hosting a week-long bar crawl starting on Monday--and inviting the community to come out and join them. So strap on your Timbuk2 bag and head out to one of the below locales for fabulous drink specials and a chance to win Timbuk2 goodies. Sounds like an excuse to party to us.

Additionally, there will be live sewing by Timbuk2 bag designers each night, a make-your-own-button area (bring a pic, if you’d like something custom-made) and a closing party at the Hayes Valley retail store on Friday night. Oh, and don’t forget the backpacks. They’ll be around, too.

Monday, Oct. 12: Blue Light (1979 Union St. at Buchanan St.)

The first three people to arrive with their customized T2 bag will receive a Dolores Chiller.

Tuesday, Oct. 13: Swig (561 Geary St. at Jones St.)

The first three people to donate their old Timbuk2 bag to At the Crossroads will receive a Custom Swig backpack.

Wednesday, Oct. 14: Dalva (3121 Mission St. at 16th St.)

The first three people to show up with their T2 bags will receive a Bag in a Box.

Thursday, Oct. 15: Hemlock (1131 Polk St. at Sutter St.)

The first three people who say "I love Timbuk2" to Tae will receive a Hemlock pack.

Friday, Oct. 16: Timbuk2 Retail Store (506 Hayes St. at Octavia St.)

Everyone who attends will receive 30 percent off packs for the evening. Additionally, the first three people to show up with their T2 pack will receive a tour of the warehouse to design their own custom bags.

Entry to each bar is free, and drink specials will run from 6 to 8pm every night.