Large button:

    <PrimaryButton size='l'>Click me</PrimaryButton>

Medium button (default):

    <PrimaryButton>Click me</PrimaryButton>

Small button:

    <PrimaryButton size='s'>Click me</PrimaryButton>

Extra small button:

    <PrimaryButton size='xs'>Click me</PrimaryButton>

Button with preloader

    <PrimaryButton isWaiting>Click me</PrimaryButton>