# Sliding Smartphone Cases The Gresso Aluminum Slider Case Holds Cards Discreetly in Your Phone By Michael Hemsworth | Published 2015-11-21 | Tech Source: Trend Hunter, https://www.trendhunter.com/trends/slider-case References: [thegadgetflow](http://thegadgetflow.com/portfolio/gresso-aluminum-slider-case-the-worlds-most-durable-iphone-case/) & [gressomiami](http://www.gressomiami.com/) The Gresso Aluminum Slider Case is one of the [strongest smartphone cases](https://www.trendhunter.com/trends/rokform-rugged-case) on the market that has been tested to meet rigorous standards of excellence, making it suitable for the modern man or woman in need of a smart way to protect their device. Coming in a variety of color options, the Gresso Aluminum Slider Case is durable, but also holds a secret; the rear of the design slides to reveal a [secret compartment for your credit cards](https://www.trendhunter.com/trends/sigracen-case). When slid upward, the Gresso Aluminum Slider Case will reveal the card compartment on the bottom that will hold a few essential cards for making purchases on the go. When you're ready to go, simply slide the compartment back up to make the Gresso Aluminum Slider Case look [sleek and sophisticated](https://www.trendhunter.com/trends/bellroy-mag-wallet) once again. ## Trend Insights (Trend Hunter) - Score: 5.2/10 - Popularity: 73% | Activity: 74% | Freshness: 8% - Audience gender: 70% men, 30% women - Primary generations: Millennial, Gen X - Top markets: North America, Europe ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Tech](https://www.trendhunter.com/tech) > [Mobile](https://www.trendhunter.com/mobile) ## Key Themes ### Why This Trend Is Growing - **Smartphone Wallet Cases:** There is a trend of creating smartphone cases that function as wallets to meet the need of always-on-the-go customers. - **Rugged Phone Cases:** There is a trend of creating phone cases that meet rigorous standards of excellence to protect smartphones from drops and scratches. - **Hidden Storage Phone Cases:** There is a trend of creating phone cases that have hidden compartments for storing the user's essential items such as credit cards, ID, etc. ### Industries Being Reshaped - **Technology:** Innovation opportunities in the tech industry involve creating smartphone cases that have functionalities beyond just protecting the device, like holding credit cards and meeting rigorous standards of excellence for protection. - **Fashion:** Innovation opportunities in the fashion industry involve creating phone cases that are both stylish and functional, like the Gresso Aluminum Slider Case. - **Finance:** Innovation opportunities in the finance industry can involve partnering with phone case manufacturers to offer financial tools that integrate with smartphone cases and wallets. ## Related on Trend Hunter - [Hidden Storage Smartphone Cases](https://www.trendhunter.com/trends/sd-card-phone-case.md) - [Multifunctional Smartphone Cases](https://www.trendhunter.com/trends/vrs-design-origin.md) - [All-in-One Smartphone Grips](https://www.trendhunter.com/trends/magcardgrip.md) - [Photographer-Targeted Phone Cases](https://www.trendhunter.com/trends/phone-cases1.md) - [Sophisticated Smartphone Cases](https://www.trendhunter.com/trends/sophisticated-smartphone-case.md) - [Metallic Machined Smartphone Cases](https://www.trendhunter.com/trends/dango-covert-iphone-case.md) - [3D-Printed Modular Phone Cases](https://www.trendhunter.com/trends/modular-sliding-system.md) - [Imperceivable Smartphone Cases](https://www.trendhunter.com/trends/nakey-smartphone-case.md) - [Slim Carry Accessories](https://www.trendhunter.com/trends/bellroy-mod.md)