Interface Essential

Business

Images Photography

Money Shopping

Programming

Computer Devices

Phone

Mail

Map Travel

Food Drink

Nature Ecology

Entertainment

Shipping

Culture

Health

Work Education

Artificial Intelligence

Arrows

Streamline 3.0

Ultimate

Core

Flex

Sharp

Plump

Micro

Freehand

Streamline Material

Nova

Cyber

Streamline Vault

Logos

Pixel

Google Material

Tabler

Remix

Feather

Iconoir

Carbon

Solar

Lucide

Brand Logos

Bootstrap

Atlas

Unicons

Ionic Icons

Phosphor

MingCute

Font Awesome

Majesticons

Mynaui

Radix

Heroicons

Flagpack

Ultimate Duotone

Disable

Delete

Ultimate Regular

Ultimate Bold

Ultimate Light

Ultimate Colors

Nova Line

Disable Delete

Content Edition

Sharp Line

Desktop Disable

Computer

Plump Line

Disable Heart

Bookmark Favorite

Sharp Remix

Cyber Duotone

Disable Sign

Way Finding

Micro Line

Calendar Disable

Calendar

Disable Remove Thick

Remove Add

Database Disable Restrict

Database

Core Solid

Upload Off Disable

Upload Download

Core Flat

Credit Card Disable

Sharp Gradient

Plump Solid - Free

Plump Remix

Notes Disable

Notes

Micro Solid

Disable Remove Thin

Nova Solid

Disable Bookmark

Messages Bubble Disable

Messages Speech Bubbles

App Window Disable

Apps Window

Core Remix

Triangle Arrow Synchronize Disable

Rotation Sync Triangle Arrow

Common File Disable

Common Files

Calendar Disable 1

Date Calendar

Core Line - Free

Sharp Solid

Search Off Disable

Search

Flex Solid - Free

Credit Card Payments

Disable Bell Notification

Flex Line - Free

Core Line

Common File Text Disable

Laptop Disable

Laptop Actions

Tablet Disable

Handheld

Desktop Actions

Core Pop

Core Duo

Disable Play

Control Buttons

Flex Solid

Plump Solid

Plump Gradient

Flex Flat

<p>Flex is a fluid icon family inspired by nature's curves. It replaces rigid geometry with smooth, flowing forms. The Line variant features elegant strokes with organic curves.</p>

Flex Line

**Summary**: Flex's most refined sub-style — 1px continuously curving organic stroke on a 14px grid, the most visually elegant line icon available, suited to consumer and lifestyle products where icons should feel modern and naturally fluid. Flowing nature-inspired paths communicate organic forms rather than systematic grids. The tone signals refined motion: "we are in flow." Best for health, wellness, and lifestyle apps where organic visual language mirrors product values; personal finance and fintech wanting a human register; and creative tools where visual craft matters; best deployed at 24px+ where the organic curve quality is fully visible.

**Last updated**: 2026-04-23

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## Fit & Recommendation

### Primary use cases

- Consumer products where the visual language should feel modern and naturally elegant
- Health, wellness, and lifestyle apps where organic visual language mirrors product values
- Personal finance and fintech products that want to feel human and approachable
- Creative and design-adjacent tools where visual craft matters
- Products with generous spacing and large icon display sizes (24px+)
- Navigation where icons should complement illustration or photography, not compete

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## Brand & Cultural Identity

### What it communicates

> "We are refined and in motion."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | 1px |
| Fill | None |
| Corner treatment | Smooth fluid curves throughout — no geometric corners anywhere |
| Color | Monochrome |

### Emotional Scores

Flex Line is one of the warmer sub-styles in the catalog — organic flowing curves create warmth, though the 1px weight and cool monochrome colour slightly offset this. It is among the softest sub-styles in the catalog — the 1px stroke with continuously flowing curves is among the softest line constructions possible. It is one of the friendlier sub-styles in the catalog — organic curves lean friendly, with the refined thinness of the stroke pulling slightly toward elegance. It is one of the more playful sub-styles in the catalog in a considered way — flowing organic curves are fluid and refined rather than casual, sitting on the friendlier side of the midpoint. On its human↔mechanical character, it is one of the most human-feeling sub-styles in the catalog — nature-inspired curves communicate flowing organic forms, not systematic grids.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Plus Jakarta Sans — humanist warmth with subtle stroke contrast; shares the organic flowing quality
- **Alternative**: Outfit — clean humanist, modern; flowing curves sit naturally alongside
- **Editorial**: Libre Baskerville Light — for lifestyle contexts, serif stroke contrast echoes organic curve variation
- **Body**: Inter Regular — universal readable body, steps back to let Flex Line lead
- **Avoid**: IBM Plex Sans, Neue Haas Grotesk, cold monolinear grotesque — perfectly constructed geometric letters fight the organic language


<p>Flex is a fluid icon family inspired by nature’s curves. It favors smooth, flowing forms. More organic than Core and subtler than the chunky Plump. Read about the <a href="https://blog.streamlinehq.com/flex/" rel="noopener noreferrer" target="_blank">design process</a>.</p>

Fluid icons

Keyboard Off

Keyboard

Keyboard Off icon - Flex Line Set

Download Keyboard Off SVG vector or transparent PNG icon in Line, Stroke style(s) for Sketch and Figma. It belongs to Flex Line vectors SVG collection.