Rainbow
My Role
Creative Product Designer
I led the design of the Rainbow anti-mosquito wristband, covering wristband design, packaging design, design proposal, and production coordination. I explored how the new brand identity could be expressed through form, color, material, and packaging structure, while working closely with the manufacturing process to ensure the final product could be produced at scale.
Team
Yixuan Wang, Designer
Rui Zhang, Production Consultant
Timeline
Jan. 2021 - Apr. 2021
DESIGN CHALLENGE
Turning Mosquito Protection into Fun
Rebranding
Chengdu Rainbow wanted to refresh its brand identity through a new product line.
How can the product feel more playful, recognizable, and different from the existing SKU?
Mosquito Repellent Insert
New None-DEET tablet technology required a specific molding size and structure.
How can the wristband hold the tablet securely while keeping the form simple and manufacturable?
For Children
The product needed to be small, safe, attractive, and easy for children to wear.
How can the design feel fun and nature-inspired while staying comfortable for daily use?
IDEATION
Exploring Playful Forms from Nature
DEVELOPMENT
Wristband Design
Concept Design
How to Make It Feel Playful?
Concept Exploration
I started from visual keywords like rainbow, cloud, and space, then explored how these elements could be translated into product form, color, and graphic details. Through sketching and form studies, I developed a playful wristband concept that connected the brand identity with children’s imagination.
Design Iteration
Making the Wristband Kid-Friendly
Iteration Focus
The wristband evolved through five design versions, with each round solving a specific usability or production issue. I refined the insert shape, watch face size, band length, buckle structure, and printing method step by step, turning the early concept into a more playful, comfortable, and production-ready product.
Production Iteration
Balancing Design and Manufacturing Feasibility
Iteration Focus
At the factory, I explored material samples, color tests, insert prototypes, and molding solutions. This stage helped me balance the original design vision with real production limits, including cost, durability, color consistency, and manufacturing feasibility.
DEVELOPMENT
Package Design
Concept Design A
Exploring a Conventional Direction
Design Direction
This direction used clouds, rainbow, space, and nature to create a playful and child-focused package. However, the overall structure and visual style felt too conventional, making it less eye-catching in sales channels. Because of this, we moved toward a more distinctive and shelf-attractive packaging direction.
Concept Design B
A More Distinctive Package Direction
Design Direction B
This direction was selected as the final package design. The diamond-like structure and transparent gradient material created a stronger connection to Rainbow’s brand identity, while making the product more eye-catching in sales channels.
Design Iterations
Refining Structure Through Mockups
Iterations Focus
Through structural mockups, dieline tests, and material samples, I refined the package shape, transparency, color gradient, and opening structure to make the final design both visually distinctive and production-friendly.
Production Iterations
From Design Vision to Manufacturing
Iterations Focus
During the production stage, I worked with the factory to adjust the PET transparency, printing method, and color gradient based on manufacturing limits, cost, and retail needs. These changes helped the final package stay visually strong while becoming easier to produce at scale.
Gradient Color Adjust
I tested how gradient printing appeared on PET materials with different transparency levels, and adjusted the artwork to keep one side of the product window clearer and more visible.
Balanced visual impact with product visibility
Cubic Box
The diamond-shaped box was designed for specialty stores and online shopping, while the cubic box was developed for supermarkets and offline retail. This version uses a simplified wristband and a lower-cost, vendor-supported box structure, making it easier to assemble and more efficient for mass production.
Lower-cost option for offline retail channels
