# Collateral

## Collateral Select

* **Collateral dropdown** (e.g. vUSD): Select which token you post as margin.
* **Balance**: Your free collateral of that token.
* Changing collateral recalculates slider limits, Value, and Cost in real time.

<div align="left"><figure><img src="/files/XNRhqIX0ZV1ttNkzRAJQ" alt="" width="375"><figcaption></figcaption></figure></div>

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## Amount Slider

The **Amount Slider** is your quick way to size up orders in logical chunks, without manual math.

* **Draggable handle** on a 0–100% bar: Chooses what fraction of your collateral to use.
* **Preset dots** at 25%, 50%, 75%: One‑tap selection of common sizes.
* **Tooltip (“56”)**: Shows the exact percentage as you drag.
* **Value & Cost** fields update live: See notional position size and margin requirement.

<div align="left"><figure><img src="/files/MT1iRN3rpOr8XQW1vxLx" alt="" width="350"><figcaption></figcaption></figure></div>


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