Take a look at the Dakine Hot Laps Stealth 2lts

Even optimists get flats. The Hot Laps Stealth is the perfect remedy for those needing only the essentials to prevent a long walk.

Designed to be worn under a jersey, this sleek waist pack comfortably carries a micro-tool, tube, CO2 cartridge, lever, bar, and phone, plus cash and ID—because stopping for a drink is nice, and getting stranded is not. As a bonus, the antimicrobial treatment keeps the bag odor free for multiple rides, and new this season, the Stealth gets a water bottle pocket, increasing its overall utility.

Features:

Limited Lifetime Warranty
Under-jersey storage solution
Breathable air mesh backpanel
Deployable side water bottle pocket
Internal fleece lined phone pocket
Spare tube or sunglasses storage
Zippered side pocket
Micro-stretch waistbelt for added comfort

Materials:

100% 450D ripstop recycled polyester (rPET) exterior

Dimensions:

21.5 x 7.5 x 2" [ 55 x 19 x 5cm ]|0.3 lbs [ 0.15 kg ]