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

Core Line - Free

Subtract 1

Core Solid - Free

Core Remix - Free

Core Duo - Free

Core Gradient - Free

Core Neon - Free

Core Pop - Free

Core Flat - Free

Core Solid

Subtract 2

Add Remove Delete

Flex Solid

Flex Line

Ultimate Regular

Subtract

Remove Add

Ultimate Bold

Ultimate Light

Core Line

Plump Line

Core Flat

Flex Remix

Ultimate Colors

Ultimate Duotone

Cyber Duotone

Remove

Cyber Line

Core Neon

Core Gradient

Core Duo

Core Pop

Core Remix

Plump Flat

Plump Remix

Plump Pop

Plump Solid

Plump Gradient

Plump Duo

Plump Neon

Sharp Line

Sharp Pop

Sharp Flat

Sharp Remix

Sharp Neon

Sharp Gradient

Sharp Solid

Sharp Duo

<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

---

## 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

---

## Brand & Cultural Identity

### What it communicates

> "We have flow and graphic intelligence."

---

## 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.

---

## 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

Subtract Square

Subtract Square icon - Flex Remix Set

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