The Ocean-Large+® telescopic handle is engineered for stability, ergonomic comfort, and long-term durability. Designed with controlled tolerances and reinforced tubes, it minimizes wobble while ensuring smooth extension and retraction — delivering confident handling and balanced control in motion.
Energy-Strong® is a shell is built from High-Grade Polycarbonate, a high-performance material engineered for demanding travel environments. Its combination of strength, flexibility, and fatigue resistance provides reliable protection while maintaining low weight.
Energy-Stop® is Openwater’s integrated wheel-lock solution, developed to provide stability when you need it most. With a simple, intuitive mechanism, the system locks the wheels in place to prevent unwanted movement on slopes, uneven surfaces, or during stationary moments.
The zipper assembly is built around two core technologies. Energy-Safe® uses a reinforced double-coil design to improve resistance against penetration. Energy-Dry® applies a waterproof coating that seals the zipper surface and limits water ingress during use.
Energy-Lock® zipper sliders are engineered with a solid, gap-free moulded construction, eliminating the weak point found in conventional slider designs. This allows the zipper to be securely locked into a premium TSA-approved lock integrated with the Travel Sentry network.
The wheels are exclusively developed by Openwater as part of our integrated engineering platform. Energy Smooth® focuses on vibration absorption and low-noise rolling through carefully controlled material composition and optimized wheel geometry. By fine-tuning density, elasticity, and profile, the system delivers stable tracking, reduced surface resonance, and consistently smooth performance across varying travel environments.
ONE FOUNDATION. EVERY CASE.
Built From the System Out.
Energy-Tec® is not a single feature. It is the shared engineering platform behind every Openwater suitcase.
Instead of developing the shell, wheels, handles and security separately, each component is designed to function within the same defined structure. This creates consistent handling, balanced performance and a product that can be maintained over time.
Energy-Smooth® — Less Resistance. More Control.
Energy-Smooth® wheels use dual precision bearings to reduce friction and create a smooth, quiet and controlled roll. Load is distributed across the wheel system for greater stability and consistent movement across airports, streets and everyday travel surfaces.
Energy-Smooth® — Precision Trolley System
A multi-stage aluminium trolley system engineered with minimal tolerances for a stable, controlled feel at every height.
Energy-Stop® — Movement When You Want It. Stability When You Don’t.
Energy-Stop® is an integrated stopping mechanism that clicks into place to prevent wheel rotation when the suitcase is stationary.
On trains, slopes, platforms and crowded spaces, it provides immediate stability without adding a separate external brake system.
STRUCTURAL PROTECTION
Protection Starts With the Structure.
THREE-LAYER POLYCARBONATE
A flexible, impact-resistant shell designed to absorb stress, maintain its shape and protect the contents without unnecessary weight.
REINFORCED ZIPPERS
A reinforced double-coil zipper paired with precision-made Unicast pullers for smooth operation, structural strength and long-term wear resistance.
SAFETY
An integrated Travel Sentry® approved TSA lock that allows authorised security personnel to inspect and relock the suitcase without damaging the closure.
ONE PLATFORM. DIFFERENT EXPRESSIONS.
The Same Engineering Principles in Every Openwater.
Every Openwater collection uses the Energy-Tec® platform as its structural foundation. The outer design and packing format may change, but the principles behind movement, protection, control and serviceability remain consistent.
Energy-Tec® Technology Icons
Each Energy-Tec® technology is represented by a dedicated icon used across products, packaging, and documentation. These icons provide quick visual reference to the technologies integrated into every Openwater product.
Below is a reference guide explaining the purpose of each Energy-Tec® icon.
ENERGY-SAFE®
Reinforced double-coil zipper system paired with solid one-piece Unicast pullers, designed to improve resistance against forced entry and long-term wear.
ENERGY-LOCK®
Precision moulded zipper interface designed to integrate securely with Travel Sentry® approved locking systems.
ENERGY-STOP®
Integrated wheel-lock system designed to stabilize luggage on slopes, uneven surfaces, and stationary environments.
ENERGY-STRONG™
Reinforced polycarbonate shell construction designed to improve structural strength and impact resistance.
ENERGY-SMOOTH®
Engineered wheel material designed to reduce vibration, improve rolling stability, and maintain low-noise performance across different travel surfaces.
ENERGY-DRY™
Protective surface treatment applied to the zipper tape to improve resistance against moisture and environmental exposure.
Frequently Asked Questions
Please find the answers of the most asked questions regarding our production and materials. If you have any further questions, don't hesitate to contact us at hello@openwaterstore.eu
What is Energy-Tec®?
Energy-Tec® is Openwater’s integrated engineering platform that defines the structural components, materials, and performance standards used across all products. It connects key technologies into a unified system designed to deliver consistent performance, durability, and long-term reliability.
Why is Energy-Tec® described as a platform rather than a feature?
Energy-Tec® connects multiple technologies into a single engineering structure. Instead of individual upgrades, mobility, shell strength, closure systems, and protective elements are developed to function together as part of a complete system.
Are Energy-Tec® technologies included in every product?
Yes. All Energy-Tec® technologies are integrated as standard components. Structural integrity, mobility systems, and closure security are engineered into every product from the beginning, ensuring consistent performance across collections.
What makes the Energy-Safe® zipper system more secure?
Energy-Safe® combines a reinforced double-coil zipper structure with solid one-piece Unicast pullers. Unlike conventional pullers assembled from multiple parts, Unicast pullers eliminate structural weak points, improving both durability and resistance to forced entry.
How does Energy-Stop® improve control during travel?
Energy-Stop® is an integrated wheel-lock system that stabilizes luggage on slopes, uneven surfaces, or during stationary moments. It allows controlled positioning without affecting rolling performance.
What improves the rolling performance of Energy-Smooth® wheels?
Energy-Smooth® wheels use controlled material composition and optimized geometry to reduce vibration and noise. Precision double bearings improve load distribution, resulting in smoother and more stable movement across different surfaces.
How does Energy-Strong® improve structural durability?
Energy-Strong® uses reinforced polycarbonate construction and strengthened structural zones to improve impact resistance and maintain shape stability under pressure and repeated use.
How do all Energy-Tec® technologies work together?
Each technology within Energy-Tec® is designed to support the others. Shell strength, wheel performance, locking systems, and closures are developed as interconnected elements within a unified engineering structure.