The PatchWorm Pocket Field Kit (PFK) is made entirely of durable nylon, and is designed to pull a clean patch with every stroke. It's a far more refined alternative to pulling a dirty snake through your barrel... 

This universal cleaning kit is so compact, it fits comfortably in a shirt pocket. Standard rifle rods are 34"

The rifle version has 8 color-coded cleaning heads:

 

.20 cal (green)
.22 cal (white)
.243 - .284 cal (black)
.308 - .348 cal (red)
.355 - .40 cal (purple)
.41 - .45 cal (orange)
.50 - .54 cal (blue)
12 gauge (yellow) 

The PFK comes with dozens of wet (with Ballistol Sportsman's Oil) and dry patches (7/8" diameter), suitable for all bore sizes through .35 caliber. Reusable flip-lid containers are included for convenient storage.

Fouling is most easily removed while the barrel is still warm. Slide on a cleaning head (green is permanently attached), pierce 1 wet patch, feed into chamber and pull straight from muzzle. Flip patch, pull again, remove wet patch. Pierce 1 dry patch, repeat. Where a range of calibers is specified for a cleaning head, a second patch can be added (stacked on top of the first) for the larger caliber to achieve a tight finishing stroke.