NEXTBODY Hoop: ultra-thin smart health band
NEXTBODY
Hoop
Ultra-thin, ultra-light
Pro fitness & health tracking
Activity and sleep tracking
CLASSIC DESIGN
Refined. Renewed.
Light weave. Forget it's on.
A white woven nylon strap that stretches to fit 135–210 mm wrists,
soft and breathable, swaps without tools, comfy all day°.
soft and breathable, swaps without tools, comfy all day°.
Thin
1
8mm
Light
1
10g
LIGHTEST
The lightest
of them all
of them all
Lighter than comparable wearables,
you'll barely know it's there.
you'll barely know it's there.
Device weight
10
g
Device weight · grams
Lightest
10
12.08
21.64
31.81
61.77
NEXTBODY
WHOOP
Xiaomi Band 10 Pro
Apple Watch
Apple Watch Ultra
* Measured without straps
Colourways · Mist Weave
NEXTBODY
Hoop
Cloud White · Mist Weave
Soft woven nylon, breathable,
silver frame. Day or night, forget it's on.
silver frame. Day or night, forget it's on.
Colourways · Sand Grid
NEXTBODY
Hoop
Cloud White · Sand Grid
Warm sand tones set in a silver frame,
geometric silicone. Sweat-proof, goes with anything.
geometric silicone. Sweat-proof, goes with anything.
Colourways · Ink Weave
NEXTBODY
Hoop
Charcoal · Ink Weave
Dense stretch-woven nylon sits snug for steadier readings,
dark frame. Understated and sharp.
dark frame. Understated and sharp.
Colourways · Slate Grid
NEXTBODY
Hoop
Charcoal · Slate Grid
Cool slate tones with a dark frame and
breathable grid silicone that shrugs off sweat.
breathable grid silicone that shrugs off sweat.
Cloud White
Silver frame with two light straps: Mist Weave nylon and Sand Grid silicone. Close-ups of both below.
Cloud White · Mist Weave
White nylon strap
Close-up: fine ribbed weave with a five-segment hook-and-loop tip that closes in one press. Soft and breathable, day and night.
Cloud White · Sand Grid
Cream silicone strap
Close-up: honeycomb texture on sand silicone with a row of hexagonal vents. Warm, sweat-proof, goes with anything.
Charcoal Black
Dark frame with two black straps: Ink Weave nylon and Slate Grid silicone. Close-ups of both below.
Charcoal · Ink Weave
Black nylon strap
Close-up: dense stretch weave with a five-segment hook-and-loop tip. Snug fit, steadier readings.
Charcoal · Slate Grid
Grey silicone strap
Close-up: honeycomb texture on dark silicone with a row of hexagonal vents. Built for hard, sweaty sessions.
IP68 water resistant
5
Splashes, rain, sweat: no problem.
It keeps recording through it all.
It keeps recording through it all.
IP68
PRO WELLNESS
Health, taken seriously
24 hours
a day
5 days
per charge
Morning, commute, meetings, workouts, bedtime: HOOP records every 5 minutes and joins your day into one continuous curve. No nightly charging, so every night's sleep gets recorded.
5
days
per charge, full tracking on
24
h
day, workouts and sleep
PRO FITNESS
Push further
48 workout modes
Every session counts
Every session counts
Running, cycling, swimming, strength, ball sports, dance. Start a workout and HOOP tracks heart rate, time and calories live,
then adds it to today's training load, so every bit of progress shows.
then adds it to today's training load, so every bit of progress shows.
Training load
Daily movement and every workout count. One number a day, 0–21.
Heart-rate zones and activity are tallied every 5 minutes, never double-counting workouts. Your target range follows last night's sleep: sleep well and it rises; sleep less and it tightens, so you know how much is just right today.
0–21
daily load
5
zones
heart-rate zones
5
min
rolling tally
NEXTBODY APP
A new software design.
Readiness, sleep and load, redrawn as one living sky. Clear at a glance, deeper the moment you look — built for the way your body actually moves.
NEXTBODY MCP
Your body data, in any AI.
Connect ChatGPT, Claude, Grok Bot or Muse to NextBody. Your assistant reads every metric you measure, and logs your meals when you ask.
ChatGPT
Claude
Grok Bot
Muse
MORE
mcp.nextbody.ai/mcp
Add as a connector, sign in once.
READ
Every metric, on demand.
Sleep, HRV, heart rate, stress, skin temperature, readiness, workouts, meals and weight, read on your own sign-in.
WRITE
Meals, in one sentence.
It confirms foods, portions and time first, then logs the plate to today. Logging stays off until you allow it.
ChatGPT
Claude
Grok Bot
Muse
Gemini
GitHub Copilot
Perplexity
Mistral
Cline
Goose
n8n
LM Studio
Manus
One connection. Every assistant you use.
Built on MCP, the open standard. Works with ChatGPT, Claude, Grok Bot and Muse, and with any assistant that supports MCP connectors.
FAQ
Accuracy, who it's for, and limits
Q
Is HOOP a medical device?
A
No. Neither the HOOP band nor the NEXTBODY App is a medical device, and neither is meant to diagnose, treat, cure or prevent any disease. Heart rate, HRV, skin temperature, sleep, readiness, training load and related tips are for everyday wellness only, not medical decisions. If you feel unwell, see a doctor.
Q
How is the sleep score calculated?
A
Out of 100, weighted across seven factors by HOOP's own rules: total sleep 40, REM 15, deep 15, efficiency 10, restfulness 10, latency 5, timing 5. Factors without data are skipped and the rest re-normalised; latency isn't used yet. The rules draw on Oura's published sleep factors but are not Oura's algorithm or a clinical scale. Heart rate, HRV and respiration are supporting data and don't count toward the score.
Q
Why is REM missing on some nights?
A
Whether REM is recorded depends on the type of sleep record the band made that night. No REM data means it wasn't measured, not that you had no REM sleep; that night's score is re-normalised over the other factors.
Q
Can I train straight off readiness and load?
A
Readiness (0–100) starts from last night's sleep and compares your recent night HRV and resting heart rate with your personal baseline; training load (0–21) tallies heart-rate zones and activity every 5 minutes. Baselines build up with continuous wear, so the first two weeks lean on population norms. Both are algorithm estimates for reference only and don't replace a coach or doctor. If you feel chest tightness, dizziness or palpitations while exercising, stop and seek medical help.
Q
Can I swim or shower with HOOP?
A
HOOP is rated IP68 for dust and water. Wear it for hand-washing, rain, sweat and shallow-water activities such as pool swimming. It's not for diving, high-board jumps, hot showers, hot springs, saunas or high-speed water. Rinse with fresh water and dry after sea or pool use. Nylon straps take a while to dry, and staying damp can irritate skin. Water resistance isn't permanent and may decline over time.
Q
Does one charge really last 5 days?
A
Five days comes from specific test conditions. Real battery life varies with tracking settings, workout time, sync frequency and temperature, and capacity declines gradually over time.
Q
How are 10g and 8mm measured? Is the comparison fair?
A
8mm and 10g are for the device body without the strap; results can vary with where and how it's measured, so the product itself is the reference. Every product in the weight chart was measured without its strap. Other products' weights can vary by model, version and batch; the chart only illustrates the difference.
Q
How accurate are food calories and macros?
A
Calories, protein, carbs and fat are estimated from the food type and portion you describe, not weighed or lab-tested, so they may differ from what you actually ate. Daily targets are general guidance, not a nutrition prescription. If you're pregnant, breastfeeding, have a chronic condition or special dietary needs, follow your doctor's advice.
Q
Is connecting ChatGPT, Claude or other AI (MCP) safe?
A
You sign in and authorise it yourself, and the assistant can only read your own account's data. Meal logging is off by default; when on, the AI confirms the food, portion and time with you before saving. Once data is sent to a third-party AI service, that service's privacy policy applies, so decide for yourself. The assistant's analysis and advice are for reference only, not medical, nutrition or training prescriptions.
Q
Which phones does HOOP support?
A
The NEXTBODY App supports iPhone on iOS 17 or later and Android phones on Android 9 or later. Update the band firmware and the App to the latest version first; some features depend on the App version.
Q
Do the colours and screens match the real thing?
A
Strap colour and texture can look different depending on photography, lighting and your display; the product itself is the reference. Phone screens are real NEXTBODY App screenshots with demo data. People and scenes are illustrative, and features and screens may change with updates.
Notes
1.
8mm and 10g refer to the device body without the strap; results may vary with measurement position, method and tools. The product itself is the reference.
2.
The stretch-woven nylon strap fits wrists of about 135–210 mm; other straps may differ. "Forget it's on" and "comfy all night" describe subjective comfort and vary by person.
3.
All weights in the comparison chart were measured without straps. Other products' figures may vary by model, version and batch; the chart only illustrates the difference.
4.
The four colourways come in woven nylon and honeycomb silicone, with tool-free hook-and-loop straps. The product itself is the reference for colour and texture; dry woven straps promptly after water or heavy sweat.
5.
The band estimates heart rate throughout the day. Skin temperature describes the surface of the wrist.
6.
The sleep score weights seven factors (total sleep 40, REM 15, deep 15, efficiency 10, restfulness 10, latency 5, timing 5); missing factors are re-normalised and latency isn't used yet. The rules draw on Oura's published factors but were set by HOOP; they are not Oura's proprietary algorithm or a clinical scale.
7.
Deep, light and REM stages are inferred from heart rate and movement. Whether REM is recorded depends on that night's record type; no record doesn't mean no REM sleep.
8.
Night HRV is RMSSD during sleep, a reference for fatigue and recovery but not for medical decisions. Personal HRV and resting-HR baselines build from the 14th valid night; a loose fit or lots of movement can reduce accuracy.
9.
Readiness (0–100) starts from last night's sleep and compares night HRV and resting heart rate with your 14-day baseline, updating every 5 minutes during the day. Training load (0–21) tallies heart-rate zones and activity every 5 minutes without double-counting workouts, and the daily range adjusts with sleep. Both are algorithm estimates for reference only.
10.
"5 days per charge" comes from specific test conditions. Real battery life varies with tracking settings, workout time, sync frequency and temperature, and capacity declines over time.
11.
"Every 5 minutes" means all-day data is summarised in 5-minute intervals; each metric's actual sampling rate may differ.
12.
The 48 workout modes reflect what the App supports. Workout heart rate, time, distance and calories are band measurements and algorithm estimates and may differ from GPS, treadmills or other devices.
13.
IP68 dust and water resistance does not cover diving, high-board jumps, hot showers, hot springs, saunas or high-speed water. Water resistance isn't permanent and may decline over time.
14.
Food calories and macros are estimated from food type and portion descriptions, not weighed or lab-tested; daily targets are general guidance, not a nutrition prescription.
15.
NEXTBODY MCP: connecting a third-party AI assistant requires your own sign-in and authorisation, and it can only read your data. Meal logging is off by default and must be turned on, with confirmation before saving. Data sent to a third-party AI service is handled under its privacy policy. Supported assistants may vary; AI advice is for reference only.
16.
Phone screens are real NEXTBODY App screenshots with demo data. People and scenes are illustrative; features and screens follow the actual App and may change with updates.
17.
Oura, Oura Ring, WHOOP, Apple Watch, iPhone, ChatGPT, Claude, Grok Bot, Muse and other third-party names and trademarks belong to their owners. They're mentioned only to describe compatibility or comparison and do not imply partnership, licensing or endorsement.
18.
This product and the NEXTBODY App are not medical devices and are not intended to diagnose, treat, cure or prevent any disease. Data, tips and advice are for reference only and not a basis for medical decisions.