Is this the Carbyne with Strap?
No. This is the standard short-cuff Carbyne. The Carbyne with Strap is a separate model with an extended wrist wrap.
What is reinforced on the palm?
Extra leather is placed over areas of the palm that receive more wear from gripping the bat.
Will the back of the glove feel stiff?
The leather backhand is paired with stretch between the fingers so your hand can move as you grip the handle.
Does palm reinforcement mean impact protection?
The extra leather is intended to resist wear. It is not a substitute for a separate batting hand guard.