Trezor vs Ledger Nano S

Carry your Bitcoin, Ethereum and Ethereum Classic in your back pocket if you want

That is not a suggestion- for Pete's sake keep that hardware wallet somewhere safe!

Check out why a hardware wallet could be a good choice for you. Learn a bit about two popular choices for crypto currency hardware wallets.

Ledger Nano S: https://www.ledgerwallet.com/products/12-ledger-nano-s

Trezor: https://bitcointrezor.com/