Redfire Mens Mountain Bike, 27.5-Inch Wheels MTB Bicycles for Adult, 21 Speeds, Trigger Shift, 18 Aluminum Frame and Dual Disc Brake(Black/Green)

Aluminum MTB frame with hydroformed tubing is strong and reliable; MTB 27. 5 wheels and tires provide traction and stability out on the trail Aluminum MTB frame with hydroformed tubing is strong and reliable; MTB 27. 5 wheels and tires provide traction and stability out on the trail Internal cable routing allows for neat, clean lines while providing added protection 90% pre-assembled,assembly tools included, easy to assemble with in 25 minutes. We have assembly video on the product page. Quick release seat post makes for easy height adjustment.18-inch Frame fit riders 5.5 to 6.2 inches tall