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

Transfer

Other Arrows

Kameleon Pop

Transfer 2

Download

Kameleon Duo

Kameleon Colors

Nova Line

Bank Transfer

Accounting Billing

Sharp Line - Streamline Material

Cloud Transfer

Text Formatting

Cyber Line

Transfer File

Data Transfer

Nova Solid

Money Transfer

Sharp Pop

Cash

Flex Line

Core Flat

Airport Transfer

Airport

Core Duo

Ultimate Duotone

Monitor Transfer 1

Network

Data Transfer Traffic 3

Data Transfer Traffic 5

Core Gradient

Transfer Van

Cyber Duotone

Data Transfer Horizontal

Outlined Line - Streamline Material

Flex Gradient

Flex Duo

Sharp Flat

Left Right Traffic Data Transfer

Ultimate Light

Monitor Transfer File

Arrow Transfer Vertical

Flex Solid

Transfer Truck Load

Transportation Train Car Transfer

Transportation Transfers

Outlined Line - Streamline Material Free

Arrow Transfer Diagonal 2

Core Solid

Freehand Duotone

Data Transfer Horizontal_1

Data Transfer Traffic Circle 1

Sharp Line - Streamline Material Free

Triangle Arrow Transfer Horizontal 3

Stickies Duo

Cloud Data Transfer

Internet Website

Transportation Boat Bus Transfer

Cloud

Flex Remix

Ultimate Duotone - Free

Data Transfer Vertical

Internet Networks Servers

Core Pop

Clouds

Rounded Line - Streamline Material

Arrow Transfer Horizontal

Core Line

Micro Solid

Arrow Transfer Horizontal 2

Ultimate Regular

Core Neon

Line Arrow Transfer Vertical 2

Multiple Line Arrow

Plump Line

Triangle Arrow Transfer Horizontal 1

Multiple Triangle Arrow

<p>Flex is all about the curves. Its smooth curves brings fluidity and dynamism to your designs with a modern appeal.&nbsp;The Flat style is easy to integrate into projects that need icons with a more illustrative purpose, working best at larger sizes. All Flex Flat icons are designed on a 14px grid with two customizable colors.</p>

Flex Flat

**Summary**: Flex's illustrative sub-style — solid flat two-tone blue fills on fluid organic silhouettes, producing a more contemporary and natural-feeling flat illustration register than geometric flat sets. Fluid organic edges soften the flat fill quality, making this register warmer and more natural than Sharp Flat or Core Flat at equivalent blue tonal palette. The tone signals organic illustration: "we illustrate nature's geometry." Best for onboarding and product tour illustrations at display sizes, feature explainer content in modern consumer products, and marketing where organic silhouettes feel more contemporary than geometric flat alternatives.

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

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## Fit & Recommendation

### Primary use cases

- Onboarding and product tour illustrations at display sizes
- Feature explainer and help content visuals
- Modern consumer product marketing where organic silhouettes feel more contemporary than geometric flats

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## Brand & Cultural Identity

### What it communicates

> "We illustrate nature's geometry."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | None |
| Fill | Solid flat fills, two-tone |
| Corner treatment | Fluid organic silhouettes |
| Color | Dark blue + light blue tonal |

### Emotional Scores

Flex Flat is somewhat warm — the blue tonal system is cool, but organic silhouettes add warmth that geometric flat sets lack. It is one of the friendlier sub-styles in the catalog — flat fills on organic silhouettes produce flowing shape edges that soften the fill. It is one of the friendlier sub-styles in the catalog — the two-tone blue in organic shapes reads as modern and considered, with mild approachability. It is somewhat warm on playfulness — organic flat illustration reads as contemporary and considered rather than playful or severe. On its human↔mechanical character, it is one of the more human-feeling sub-styles in the catalog — fluid organic silhouettes read as natural forms, not diagrams.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Outfit — modern humanist, appropriate for the illustrative flat icon context
- **Alternative**: Plus Jakarta Sans — warm humanist, works in illustrative contexts
- **Body**: Inter Regular or DM Sans
- **Avoid**: Cold geometric or monospace 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

Transfer Delivered Outbound

Transfer Delivered Outbound icon - Flex Flat Set

Download Transfer Delivered Outbound SVG vector or transparent PNG icon in Flat style(s) for Sketch and Figma. It belongs to Flex Flat vectors SVG collection.