Smartwool Kids Classic Thermal Merino Base Layer Bottom Blueberry 9 speed The thick padding insulates your

The thick padding insulates your food and protects your gear

12mm width

The steel brackets provide multiple height options for mounting the wheels

SHIMANO Equivalent MF-TZ21 / MF-TZ20

Install the idler and any spacers needed to keep it from rubbing on things and tighten the idler bolt

Smartwool Kids Classic Thermal Merino Base Layer Bottom Blueberry 9 speed The thick padding insulates yourOur Kids' Classic Thermal Merino Base Layer Bottom uses our super soft Mid 250 interlock knitperfect for layering in cool conditions and great for wearing alone on a mild day. Now your kids can be as warm, dry and comfortable as you are. In your Smartwool base layers.