

Boot Extender
Get an extra size for your boots. The perfect recovery with Sizen pressotherapy on your legs. More recovery, more relaxation, and BIGGER SIZE!
- Extends the width of the boots by 10 cm
- Greater width from feet to groin
- 2 units (one for each leg)
IMPORTANT:
- The size you should select (M, L, XL) is your Sizen boots size.
- If you have the 6+ model from 2022 or earlier, consult us before buying and we will confirm which model you should select.
Pairs well with
Shipping in 24-48 business hours.
Personalized advice
3 years warranty
Free shipping.

Boot Extender
If you have any questions, you are always welcome to contact us. We will respond as soon as possible, within 24 hours on business days.
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Shipping Information
Standard shipping (48-72 h) is free on orders over €49 (delivery on business days, Monday to Friday).
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Customer Service
Our team responds to inquiries from Monday to Friday.
Guaranteed response time: within 24 business hours. If you write to us during the weekend or a holiday, we will respond on the next business day. -
FAQ’s
Find quick answers to the most common questions about orders, shipping, and customer service at Sizen. If you need more help, we are here for you!
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Contact us
At Sizen, we are always available to help you. If you have questions or need assistance, do not hesitate to write to us at info@sizensrs.com or call us at +34 617 806 923
PROFESSIONAL PRESSOTHERAPY
Professional recovery within everyone's reach.
Our entry-level product into the Sizen world, a basic device but with everything you need...
Everything to be ready for the next day of your training.

They know anywhere, but with you
At Sizen, we know that well-being cannot wait and that recovery should have no limits. That is why we design our devices with a clear mission: to bring high-level muscle recovery wherever you go.
Discover why more and more athletes, physiotherapists, and active people choose Sizen to recover better, faster, and without stopping their pace of life.
Specifications Pressotherapy
Independent cameras
The Sizen pressotherapy devices use overlapping air chambers that inflate sequentially to apply controlled compression on the legs, arms, or waist.
We offer devices with 4, 6, or 8 air chambers, allowing pressure and coverage to be adjusted according to the type of use or user need.
Massage programs
The Sizen pressotherapy devices are designed to suit different recovery and wellness needs. Depending on the model, they feature 4 or 6 massage programs, each with a specific compression pattern that stimulates circulation, reduces muscle fatigue, and improves post-training recovery.
High pressure
The Sizen pressotherapy devices offer 25 adjustable pressure levels, reaching up to 250 mmHg, one of the highest ranges on the market. This allows you to tailor each session to your specific needs:
Bluetooth and App.
Manage your pressotherapy session comfortably and intuitively thanks to the Bluetooth connectivity and the official Sizen App. Compatible with our advanced models, this feature allows you to:
- Turn on, turn off, and pause the device from your smartphone.
- Select massage programs and pressure levels.
- Activate or deactivate chambers individually.
- Save your favorite settings for quick use.
- Monitor your session time in real time.
Available for iOS and Android, the Sizen App turns your recovery routine into an even more personalized, smart, and comfortable experience.
Included in the box

Boots/Pants

Device

Manual QR

Power adapter (AC/DC)

Carrying bag (Optional)
QUESTIONS AND ANSWERS
FAQs
Check our FAQ for more information
What is pressotherapy and what is it used for?
Pressotherapy is a controlled compression technique that stimulates blood and lymphatic circulation. At Sizen, we use it to help with muscle recovery, fatigue reduction, improvement of sports performance, and relief of heavy or swollen legs.
How many air chambers do our equipment have?
Depending on the model, our devices feature 4, 6, or 8 air chambers. The more chambers, the greater the precision and customization in compression.
How many programs does each model have?
We offer models with 4 or 6 massage programs, each designed for a specific purpose: from lymphatic drainage to deep post-workout recovery.
What pressure level does it reach?
Our devices allow you to select from 25 pressure levels, with a range reaching up to 250 mmHg, ideal for both beginner users and professional athletes.
Can the equipment be controlled from the mobile phone?
Yes, our most advanced models include Bluetooth connectivity and are compatible with the Sizen App, available for iOS and Android. From there you can control all the parameters of your session.
What does the equipment include when purchased?
Each Sizen device includes the main unit, a set of accessories (Boots or Pants) depending on the pack, charger, user manual, and optional carrying bag. Some packs include additional accessories depending on current offers.
How long does a pressotherapy session last?
You can schedule sessions between 10 and 90 minutes, although the recommended time for most users is 20 to 30 minutes.
Does the equipment need maintenance?
No complex maintenance is required. It is only recommended to clean the covers after use and store the equipment in a dry place. For inspections or repairs, we have our Official Sizen Technical Service.
Is there a warranty?
Yes, all our products come with a 3-year official warranty, which covers manufacturing defects and technical issues not caused by misuse.
Can I use it if I am not an athlete?
Of course! Although Sizen is designed for athletes, it is also ideal for people with tired legs, fluid retention, or who spend many hours standing or sitting.










