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

Block – Free

Send

Other UI

Guidance – Free

Interface

Outlined Line - Streamline Material

Communication

Micro Solid

Core Pop

Core Gradient

Flex Remix

Flex Gradient

Stickies Colors

Send 2

Email Phone

Stickies Duo

Core Flat

Micro Line

Core Solid

Flex Duo

Core Duo

Plump Remix

Flex Flat

Sharp Solid

Sharp Line - Streamline Material

Plump Line

Core Line

Sharp Line

Rounded Line - Streamline Material

Plump Duo

Flex Line

Flex Solid

Plump Solid

Platinum

Sharp Pop

Plump Pop

Plump Neon

Flex Pop

Core Remix

Sharp Flat

Sharp Duo

Plump Gradient

Flex Neon

Sharp Remix

Plump Flat

Core Neon

Sharp Neon

Sharp Gradient

Send 1

Ultimate Regular

Send Email 1

Send Email

Ultimate Colors

Send Email 3

Ultimate Duotone

Send Email Fly

Outlined Line - Streamline Material Free

Send Alt

<p>Flex is all about the curves. Its smooth curves brings fluidity and dynamism to your designs with a modern appeal.&nbsp;The Remix style is ideal for designs that require a distinct look without overwhelming the overall aesthetic.&nbsp;All Flex Remix icons are designed on a 14px grid with a mix of outlined and filled shapes.</p>

**Summary**: Flex's graphic identity sub-style — outlined paths mixed with opaque solid fills on organic curved forms, creating a visually complex, flowing graphic presence for brand and editorial use. The flowing construction feels organic and designed rather than computed, with the fill-plus-line mix adding visual complexity while retaining warmth through shape language. The tone signals "flow and graphic intelligence" — a more characterful version of the organic aesthetic for contexts beyond standard UI chrome. Best for brand identity components, marketing illustrations, feature highlight sections, and creative campaigns where icons need graphic presence at medium to large sizes.

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

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## Fit & Recommendation

### Primary use cases

- Brand identity components where the fluid graphic character is a visual statement
- Marketing illustrations and feature highlight sections
- Creative brand campaigns where icons need graphic presence beyond standard UI weight
- Editorial contexts at medium to large sizes

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## Brand & Cultural Identity

### What it communicates

> "We have flow and graphic intelligence."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | Variable |
| Fill | Mix — outlined paths + opaque solid fills per element; no cutouts, no white fill |
| Corner treatment | Smooth organic curves |
| Color | Monochrome |

### Emotional Scores

Flex Remix is one of the warmer sub-styles in the catalog — monochrome, but flowing fill-and-outline mix retains natural warmth through its shape language. It is one of the more human-feeling sub-styles in the catalog on softness — partial fills within flowing construction add definition without hardness. It is one of the friendlier sub-styles in the catalog — the organic graphic mix is distinctive and considered, with only mild formality. It is one of the more playful sub-styles in the catalog in a nuanced way — the flowing organic form creates considered visual complexity rather than outright play. On its human↔mechanical character, it is one of the most human-feeling sub-styles in the catalog — the flowing construction feels organic and designed, not computed.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Syne — display-weight geometric with flowing aesthetic that matches Flex Remix's organic graphic presence
- **Alternative**: Plus Jakarta Sans Bold — humanist weight at display level
- **Body**: Outfit Regular or DM Sans
- **Avoid**: Cold rational grotesque; warm hand-drawn fonts


<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

Send Email icon - Flex Remix Set

Download Send Email SVG vector or transparent PNG icon in Remix, Outlined style(s) for Sketch and Figma. It belongs to Flex Remix vectors SVG collection.