Case Study 02

Wearable Wellness Jacket

A jacket that quietly monitors stress signals — heart rate, breathing, skin temperature — and responds with calming haptics, warmth, and hug-like compression. Wellness support that feels like clothing, not a medical device.

TypePhysical prototype + video demo
My roleUser feedback, video demonstration
TeamGroup project · 4 members

Sketching the concept

Early sketches explored sensor placement, cooling elements, and how the jacket fits into daily routines like studying and commuting.

Sketches of the jacket's features
Sketches of the jacket’s features
Sketches of the jacket's coolers
Sketches of the jacket’s cooling elements
Sketches of the jacket in daily activities
How the jacket works across daily activities

Testing with users

I ran feedback sessions with two target users — a law student facing long, sedentary study sessions, and a real estate agent commuting between client meetings. Their reactions reshaped the design: wrist sensors clashed with smartwatches and typing, automatic blood-pressure readings felt clinical and anxiety-inducing, and bulky cooling packs read as “medical device” rather than clothing.

The physical prototype

Sensors moved off the wrist and into functional zones across the chest, back, and torso. The chest tracks heart rate and breathing; the upper back monitors posture; adaptive compression along the torso delivers a soft, hug-like pressure tied to stress levels; and gentle heating panels replaced the bulky coolers.

Inside view of the physical prototype
Inside view — sensor and haptic zones
Outside view of the physical prototype
Outside view of the wellness jacket

Blood pressure is now measured only on demand, via a removable upper-arm cuff triggered by an intentional gesture — the user decides when to monitor, not the jacket.

Companion app & smart hanger

Biometric and environmental data syncs to a mobile app for deeper insights, and the jacket recharges automatically when hung on its smart hanger — charging folded invisibly into an existing habit.

Mid-fidelity UI of the mobile appMobile app on a phone
Mid-fidelity UI of the companion mobile app
Adjusting the jacket's heating level
Adjusting the jacket’s heating level in the app
Smart hanger charging
Smart hanger charging system

Reflection

The biggest lesson: wellness tech isn’t about collecting accurate data — it’s about how the user feels while wearing it. Features meant to help can become stressful if they feel too medical, automatic, or intrusive. Every revision moved the jacket toward being a subtle extension of everyday clothing rather than a gadget.