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

Outlined Line - Streamline Material Free

Split Vertical

Common Actions

Rounded Line - Streamline Material Free

Outlined Fill - Streamline Material Free

Split Vertical Fill

Sharp Remix - Free

Flip Vertical Arrow 2

Core Duo - Free

Flip Vertical Square 2

Nova Line - Free

Menu More Vertical

Sharp Line - Streamline Material

Flip Vertical

Photo Image

Sharp Line

Spacing Vertical

Edit

Ultimate Light

Expand Vertical 2

Resize

Ultimate Bold

Expand Vertical 4

Plump Line

Vertical Scroll

Page Controller

Sharp Remix

Distribute Vertical

Align

Core Remix

Core Pop

Rounded Line - Streamline Material

Shrink Vertical

Core Solid

Vertical Slider 4

Setting

Flex Line

Vertical Menu

Flex Remix

Eraser Tip Vertical

Ultimate Regular

Gesture Swipe Vertical 1

Touch Gestures

Vertical Menu Circle

Expand Vertical 3

Scroll Vertical

Move

Triangle Arrow Move Vertical

Movement Triangle Arrow

Ruler Tip Vertical

Core Flat

Reorder Dots Vertical

Flip Vertical Arrow 1

Flip

Scroll Vertical 1

Flex Solid

Core Duo

Layouts

Tailless Triangle Arrow Shrink Vertical

Tailless Triangle Arrow

Micro Solid

Align Vertical Top

Plump Duo

Dashboard Vertical Rectangle

Dashboard

Flip Vertical Square 1

Rotate Vertical

Rotate

Shrink Vertical 1

Dashboard Vertical Pills Thirds

Plump Solid

Core Line

Line Arrow Transfer Vertical Large 1

Big Multiple Line Arrow

Line Arrow Vertical

Single Line Arrow

Arrow Transfer Vertical

Ultimate Colors

Data Transfer Vertical

Data Transfer

Align Vertical Center 2

Line Arrow Transfer Vertical 3

Multiple Line Arrow

<p>Flex is a fluid icon family inspired by nature's curves. The Solid variant features smooth, filled shapes with rounded edges for a friendly, organic aesthetic.</p>

**Summary**: Flex's impact sub-style — opaque fills on fluid organic silhouettes, providing strong visual presence while preserving the flowing, nature-inspired quality that distinguishes Flex from geometric solid sets. Organic silhouette edges soften the fill hardness, keeping the register modern and grounded rather than authoritative or cold. The tone signals organic groundedness: "we are grounded and solid without being rigid." Best for active and selected states paired with Flex Line, feature callouts in lifestyle and consumer apps, photography-heavy layouts where organic icon silhouettes complement imagery, and navigation where Flex Line is too fragile at small sizes.

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

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## Fit & Recommendation

### Primary use cases

- Feature callouts and primary actions where the organic filled silhouette creates distinction
- Navigation in apps where Flex Line is too fragile at small sizes
- Badge, tag, and indicator systems with a modern organic aesthetic
- Photography-heavy layouts where organic icon silhouettes complement imagery
- Active and selected states paired with Flex Line for inactive states

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## Brand & Cultural Identity

### What it communicates

> "We are grounded and organic."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | None |
| Fill | Opaque fill with transparent cutouts — background visible through cutout areas |
| Corner treatment | Smooth rounded organic silhouettes — shapes flow rather than contain |
| Color | Monochrome |

### Emotional Scores

Flex Solid is one of the friendlier sub-styles in the catalog in a grounded way — solid black fills on organic silhouettes read as modern and natural, with the warmth of flowing shapes partially offsetting the coldness of a black fill. It is somewhat soft — solid fills add visual weight, but organic silhouette edges soften the overall reading. It is somewhat friendly — organic solid silhouettes are modern and considered, landing between warmly approachable and formal. It is somewhat playful in a restrained sense — the organic quality reads as natural rather than playful, with the solid fill giving authority without severity. On its human↔mechanical character, it is one of the more human-feeling sub-styles in the catalog — organic silhouettes read as natural forms, and the fill does not mechanise them.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Plus Jakarta Sans SemiBold — weight-appropriate for solid fills while retaining humanist warmth
- **Alternative**: Outfit SemiBold — modern, clean, compatible with organic silhouettes
- **Body**: Inter Regular or Mulish
- **Avoid**: Heavy grotesque display at maximum weight — overwhelms organic solid silhouettes


<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

Line Arrow Transfer Vertical Large 3

Line Arrow Transfer Vertical Large 3 icon - Flex Solid Set

Download Line Arrow Transfer Vertical Large 3 SVG vector or transparent PNG icon in Solid, Bold, Glyph style(s) for Sketch and Figma. It belongs to Flex Solid vectors SVG collection.