check out these Flexair gloves

weighs a (claimed) 647-grams with a battery

9mm diameter

See the link below to view the more affordable non-MIPS version

but it can be used on the seat post as well

FUNN Fantom AM35 Wheelset - XD Driver - Black - F-15x110mm Boost R-12x148mm Boost - 6 Bolt - Front and Rear - 27.5 Inch Dangerous Goods check out these Flexair glovesBombproof and lightning fast wheels. The Fantom AM35 is for the Trail and Enduro riders. Designed to be lightweight and fast rolling with a 35mm external 30mm internal width for the perfect balance of speed and control. Funn Fantom wheelsets are the complete package, pairing Funn Fantom hubs and rims to create a lightweight, tough and fast wheel for everything from downhill to trail to gravel. Funn wheels are available in 27. 5? and 29? and Boost Non