$115. Field Notes Wallet The Original Park Sloper by OneStarLeatherGoods. "The Original Park Sloper" wallet (see my other listings). The original design fits the minuscule Moleskine Volant notebooks (2.5"x4"). This design fits the 5.5" x 3.5" Moleskine 80-page Volant or 64-page Cahier notebooks as well as the venerated 48-page Field Notes memo books of the same size.