The Bonsai brings together the very best that birch and aluminium have to offer to satisfy those who love the tactile beauty and heirloom quality of wood, but are into the durability and serviceability of a corrosion free metal. The horizontally laminated SuperPly(TM) frame is precisely engineered to harness the wood&';s natural spring for fantastic ride quality, whilst having the rotational stiffness that enables the clean lines of the single sided stay. A profile designed to eliminate weight but also wastage in production - so you can rest easy about the carbon foot print of your bike. And, if durability, ride quality and responsible manufacturing weren&';t enough, the Bonsai comes complete with our super lightweight all aluminium wheels running on sealed cartridge bearings and the awesome Ritchey finishing kit, keeping resistance and weight low and speed and control high. [Left column] STANDOVER HEIGHT 33CM FRAME TRANSVERSE LAMINATED GRADE A BIRCH VENEERS, WBP GLUE FORK TRANSVERSE LAMINATED GRADE A BIRCH VENEERS, WBP GLUE STEERER TUBE AL6061 WHEELSET ER 12", PNEUMATIC, SEALED CARTRIDGE BEARING HUBS CNC&&';;D AL6061, CARTRIDGE BEARING, HOLLOW AL7075 AXLE RIMS 20H ANODISED AL6061, BLACK SEAT POST AL6061, 22.2MM FRONT TYRE 12.5*1.75, INNOVA-2603 VALVE CAPS Due to safety regulations changing we are no longer able to supply dust caps as standard for bikes that are labelled as age appropriate for children under 3 years of age. [Right column] WEIGHT 3.75KGS REAR TYRE 12.5*1.75 INNOVA-2603 HEADTUBE AL6061 HEADSET 1 1/8" CONVENTIONAL STEM RITCHEY OS FORGED AL6061, 60MM REACH BARS 400MM RITCHEY OS DOUBLE BUTTED AL6061, 20MM RISE GRIPS ER SOFT TOUCH MUSHROOM SADDLE BROWN RIVETTED FAUX LEATHER SEAT CLAMP ER BOLT SEAT CLAMP, 25.4MM