To avoid additional costs during the cycling portion of this tour we recommend you only bring 1 large piece of luggage and 1 day pack / small backpack with you on tour. (tripcentral.ca)
I'm a firm believer in getting as small a backpack as possible. (teacaketravels.com)
Small backpack includes a leash so you and your companion are ready to head out on an adventure with a fashionable backpack! (whywewag.com)