Wahoo Fitness KICKR V6 Power Smart Trainer Bike Electronics GPS & Computers Accurate power measurement of + Colour:Foxglove Accurate power measurement of + 1% with up to 2500W of resistance AUS 6 XXS 28 8 XS 30 10 S 32 12 M 34 14 L 36 16 XL 38 18 XXL 40 US 28 30 32 34 36 38 40 UK 28 30 32 34 36 38 40 France 34 36 38 40 42 44 46 Chest 75 80cm 39 31" 80 85cm 31 33" 85 90cm 33 35" 90 95cm 35 37" 95 100cm 37 39" 100 105cm 39 41" 105 110cm 41 43" Waist 55 60cm 21 23" 60 65cm 23 25" 65 70cm 27 29" 70 75cm 27 29" 75 80cm 29 31" 80 85cm 31 33" 85 90cm 33 35" Hip 80 85cm 31 33" 85 90cm 33 35" 90 95cm 37 39" 95 100cm 37 39" 100 105cm 39 41" 105 110cm 41 43" 110 115cm 43 45" Body Loop 143 148cm 56 58" 148 153cm 58 60" 153 158cm 60 62" 158 163cm 62 64" 163 168cm 64 66" 168 173cm 66 68" 173 178cm 68 70" AUS 20 22 US 42 44 UK 42 44 France 48 50 Chest 110 115cm 43 45" 115 120cm 45 47" Waist 90 95cm 35 37" 95 100cm 37 39" Hip 115 120cm 45 47" 120 125cm 47 49" Body Loop 178 183cm 70 72" 183 188cm 72 74" and 12 speed Shimano and SRAM cassette drivetrains either – it's a virtually silent ride