# Waterproof Lattice-Style Healthcare Casts The Castomize TessaCast Uses a 4D Printing Process By Michael Hemsworth | Published 2026-05-16 | Lifestyle Source: Trend Hunter, https://www.trendhunter.com/trends/castomize-tessacast References: [yankodesign](https://www.yankodesign.com/2026/05/15/a-4d-printed-cast-you-can-actually-shower-in/?utm_source=feedly&utm_medium=rss&utm_campaign=a-4d-printed-cast-you-can-actually-shower-in) & [castomize.co](https://www.castomize.co/)  The [Castomize TessaCast](https://www.trendhunter.com/trends/tessacast) has been developed by the Singapore-based startup as a healthcare cast that's designed as an update to the original to incorporate modernized benefits. The cast is achieved through what the company calls a [4D printing process](https://www.trendhunter.com/trends/Clinical-3D-printing), which sees it 3D printed using thermoplastic materials before being heated and applied to the patient at the arm, wrist or leg. The cast will then become pliable to ensure the right fit and doesn't require any casting tape or plaster to be positioned. The Castomize TessaCast is characterized by its [open lattice design](https://www.trendhunter.com/trends/3dprinting-resin) that will allow air to circulate around the skin without compromising on support for healing. The cast also allows for adjustments to be made during the healing process without having to be completely destroyed. ## Trend Insights (Trend Hunter) - Score: 6.5/10 - Popularity: 61% | Activity: 58% | Freshness: 75% - Audience gender: 50% men, 50% women - Primary generations: Millennial, Gen X - Top markets: Asia ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Lifestyle](https://www.trendhunter.com/lifestyle) > [Health](https://www.trendhunter.com/health) ## Key Themes ### What's Driving This Trend - **4D Printing Medical Devices:** A shift toward thermally activated, shape-adaptive fabrication that permits on-demand fitting and post-production tuning of medical appliances. - **Lattice-structured Wearables:** Open, mesh-like designs that balance structural support with airflow and skin monitoring, facilitating extended-wear comfort and hygiene. - **Adjustable Reusable Supports:** Modular and thermoformable supports that allow periodic resizing and incremental therapeutic adjustments during healing without full replacement. ### Who This Affects Most - **Orthopedics:** Patient-specific, thermally conformable casts promise personalized immobilization solutions that reduce complications from swelling and prolonged immobility. - **Medical Device Manufacturing:** Adoption of 4D-capable materials and lattice design methods suggests new product lines focused on customizable, recyclable, and water-resistant therapeutic devices. - **Rehabilitation and Home Care:** Lightweight, breathable, and adjustable supports could extend outpatient recovery tools and remote-monitoring integrations for at-home therapy management. ## Related on Trend Hunter - [Patient-Specific Metal Brackets](https://www.trendhunter.com/trends/lightbracket-metal.md) - [3d Lattice Bike Saddles](https://www.trendhunter.com/trends/aeris.md) - [Responsive 3d-Printed Chairs](https://www.trendhunter.com/trends/flow-chair-1.md) - [3D-Printed RF Components](https://www.trendhunter.com/trends/tethon-d.md) - [Patient-Specific Megaprosthesis Implants](https://www.trendhunter.com/trends/printed-elbow-megaprosthesis.md) - [Patient-Specific Surgical Instruments](https://www.trendhunter.com/trends/customed-3d-printed.md) - [Programmable Foam Lattice Systems](https://www.trendhunter.com/trends/programmable-lattice.md) - [Lumbosacral Orthosis Back Braces](https://www.trendhunter.com/trends/innovative-medical-equipment.md) - [Ribbed 3D-Printed Floor Systems](https://www.trendhunter.com/trends/selective-cement-activation.md)