# What is Backpack Wallet?

Backpack is a **security conscious self-custodial crypto wallet** for Solana, Ethereum, Optimism, Arbitrum, Polygon, Base, Sonic and many more blockchains.  It enables you to have complete control over their crypto assets.

## **Backpack Wallet is used for all your crypto needs.**

* sending and receiving crypto assets
* swapping crypto tokens
* staking crypto tokens
* viewing, securing and trading NFTs
* connection with cold storage hardware wallets Ledger, Trezor and Keystone
* multi-sig wallet protection
* connecting to developer testnets

[**Download the Backpack wallet for browser, iOS and Android here.**](https://backpack.app/)

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## Backpack is a secure place to store NFTs.

NFT **collection locking** is an easy to use feature that **automatically rejects transaction requests** when an NFT is locked in the Backpack Wallet. Note: Collection locking is currently limited to select projects.

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