Size-W470 x H295 x D230(36-58L) Description-High Quality Item Can expand from 18L to 29L Waterproof Layer Can load Full Face Helmet. (come with rain cover x 2,base shape x 2,fixing belt x 6,) how to install???please click here> https://youtu.be/O8qqmTyopxA (add $10 for installation charge if u need) saddle bag on can with pillion. self collect at woodlands circle. Thank You.