SKU: 18539003969
cybex sirona m base

cybex sirona m base Cybex® Base T Cloud/Sirona i-Size Black

Sale price$25.97 Regular price$28.86
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Ships within 48 hours · Estimated delivery Nov 4 - Nov 9

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Description

cybex sirona m base Cybex® Base T Cloud/Sirona i-Size BlackThe Base T clicks easily into your vehicle, with no vehicle seat belt required. Installation is safe and simplified thanks to optimized ISOFIX release buttons. A rotation mechanism lets you get your child in or out of the car seat with ease. Specifications: Age range (when combined with the CloudT i Size or Cloud Z2 i Size): From birth up to approx. 24 months Age range (when combined with the Sirona T i Size or Sirona Z2 i Size): From birth up to

The Base T clicks easily into your vehicle, with no vehicle seat belt required. Installation is safe and simplified thanks to optimized ISOFIX release buttons. A rotation mechanism lets you get your child in or out of the car seat with ease.

Specifications:

  • Age range (when combined with the CloudT i-Size or Cloud Z2 i-Size): From birth up to approx. 24 months
  • Age range (when combined with the Sirona T i-Size or Sirona Z2 i-Size): From birth up to approx. 4 years
  • Approval regulation: UN R129/03 i-Size

The practical and versatile Base T is a safe and secure foundation for the CYBEX T Line Modular System. A practical and comfortable rotation mechanism enables easy on and off-boarding for your child, whether you're using the Cloud T i-Size or the Sirona T i-Size. Optimized and user-friendly ISOFIX-Release buttons have visual indicators to confirm the base is set up correctly, making installation more intuitive and easy.

Functions:
  • Extra stability and safety in the car, with the load leg preventing forward rotation in the event of an accident
  • Enables 180° rotation of the Cloud T i-Size infant car seat – allowing you to comfortably place your child into their car seat 
  • Enables 360° rotation of the Sirona T i-Size car seat – giving you the choice between a forward-facing position (from min. 15 months and 76 cm) or a more secure rear-facing position 
  • Smart investment: One base for two consecutive car seats (CYBEX T Line Modular System) 
Compatible with:
  • Cloud T i-Size
  • Cloud Z2 i-Size
  • Sirona T i-Size
  • Sirona Z2 i-Siz

Features:

  • Norm: i-Size, UN R129/03
  • Age: From birth up to approx. 24 months (in combination with Cloud Z2 i-Size)
  • Age: From birth up to approx. 4 years (in combination with Sirona Z2 i-Size)
  • Smart investment: One base for two consecutive car seats (CYBEX Z2 Line Modular System) 
  • Enables 180° rotation of the Cloud Z2 i-Size, allowing you to comfortably place your child into their car seat
  • Enables 360° rotation of the Sirona Z2 i-Size car seat – giving you the choice between a forward-facing position, a more secure rear-facing position
  • Easy and comfortable boarding 
  • The secure and variable base unit
  • Comfortable, flexible use 

Easy on and off-boarding

Rotate the Cloud T i-Size and Sirona T i-Size car seats towards the car door, for effortless on and off-boarding. Just pull the easy-to-access handle on the Base T to swivel your car seat to the ideal boarding position.

One base ‒ Two seats

As it's compatible with both the Cloud T i-Size and Sirona T i-Size, the Base T delivers maximum versatility and a long-lasting solution for your growing child. It's the foundation of the CYBEX T-Line Modular System.

Intuitive and easy installation

Equipped with optimized and user-friendly ISOFIX release buttons, the Base T is intuitive and easy to install. The Cloud and Sirona T i-Size car seats can also be clicked on and off the base with ease. Tried-and-tested load leg technology also delivers extra stability.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18539003969

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Twins9
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Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all. The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day. They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable. Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
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Reviewed in the United States on January 16, 2026
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swwkennyg
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Size: Medium, Color: (001) Black / Black / Castlerock
Wonderful socks . The weight is perfect !! These do not slip when in a shoe they stay out !!
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Reviewed in the United States on April 14, 2026
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Monica Alzate
Cuba, US
★★★★★ 4
Amazing but quality changed
Size: Large, Color: (002) Black / Black / Halo Gray
Love these socks so much, been buying them for about 4 years now!! Not giving them 5 stars anymore because the quality is different and not as good, durable and thick as before.
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Reviewed in the United States on July 10, 2025
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Heather260
Lowell, US
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The only no show socks I have ever found that do not slide down. These are very comfortable and the extra tab on the back provides comfort by keeping shoes from rubbing the back of your foot. The top of the sock also comes up high enough to cushion the top of your foot all while still remaining hidden while wearing tennis shoes or even with my hey dudes.
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Nick
Whiting, US
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Size: Medium, Color: (001) Black / Black / Castlerock
These socks are tight but after the first wash and dry , they fit perfect and NEVER slide off , ordered a second pack
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Reviewed in the United States on March 24, 2026

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