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Castelli Thermoflex Arm Warmers - Black/Yellow Fluo



Availability: In stock Usually dispatched within 24 hours

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View Size Guide
Castelli Men's Clothing Size Guide
  S M L XL 2XL 3XL
Chest (cm) 92 96 100 105 110 115
Waist (cm) 80 84 88 93 98 103
Hips (cm) 94 98 102 107 112 117
Inseam (cm) 82 83 84 85 86 87


Castelli Shoe Cover Size Guide
  S M L XL 2XL
Men's/Women's EU Size 39-40 41-42 43-44 45-46 47-48


Castelli Men's Socks Size Guide
  S/M L/XL 2XL
Men's Shoe Size (EU) 35-39 40-43 44/47


Castelli Gloves Size Guide
Men/Women <17cm 17-20cm 20-23cm 23-25cm 25-27cm >27cm



Thermal arm warmer designed by Castelli. This sleek, minimalistic arm warmer combines technical fabrics with precise design, to create a comfortable yet efficient cycling accessory.

The arm warmer is constructed using 'Thermoflex' fabric, which helps provide a soft, comfortable fit that also provides the necessary warmth for training in cold conditions. The arm warmer also sports stretchy, elastic properties, granting a greater level of both comfort and flexibility during periods of peak performance.

The 'Thermoflex' arm warmer is also bolstered by the addition of a microfibre gripper elastic top, for a more secure fit. - O.S.

Key Features:

  • Castelli Thermoflex Arm warmer
  • Thermoflex fabric
  • Microfibre gripper
  • Sublimated Castelli wordmark

Technical Specification:

  • Colour: Black/Yellow 
  • Weight: 104g

Product Details

  • Thermoflex
  • Castelli
  • Black/Yellow

Delivery & Returns

Express Delivery Available

If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock | Usually dispatched within 24 hours

Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.

How will I know it has been sent

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing your account details and following the prompts.

Please allow 10 working days from the shipping date of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbors to see if your delivery has been left with them, check any places it could be left such as: garage, porch, or behind garbage cans if it was too big to fit through your mailbox. Contact your local post office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

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Castelli Thermoflex Arm Warmers - Black/Yellow Fluo

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Castelli Thermoflex Arm Warmers - Black/Yellow Fluo