Does the skullcap cover the ears?

Yes, it features a contoured shape designed to cover the ears for added warmth.

Is it suitable for wearing under a helmet?

Yes, its raw-cut edges and low bulk finish ensure it fits smoothly under a cycling helmet.

What material is the skullcap made from?

It is made from Castelli's Thermoflex material, known for its warmth and breathability.

Does it have any stitching that might cause irritation?

No, it uses flat-lock stitching to prevent irritation during wear.

Is the skullcap machine washable?

Yes, it can be machine washed, but follow the care instructions to maintain its quality.

What is the weight of the skullcap?

The exact weight is not specified, but it is lightweight for comfortable wear.

Does it come in other colours?

The product information specifies a black variant, but other colours may be available.

Castelli Pro Thermal 2 Skully Cap - Black

The Castelli Pro Thermal 2 Skully Cap is designed for cyclists who brave cold weather conditions. This essential accessory is crafted from Thermoflex material, providing warmth and comfort during rides in plunging temperatures. Its contoured shape ensures full ear coverage, while raw-cut edges and flat-lock stitching minimise bulk and irritation, making it ideal for wearing under a cycling helmet. The skullcap features a low-profile design that fits seamlessly under helmets, ensuring a snug and comfortable fit. The Thermoflex fabric offers excellent insulation without adding unnecessary weight, making it practical for long rides. Its breathable properties help regulate temperature, keeping you warm without overheating. This skullcap is perfect for dedicated cyclists who ride in chilly conditions. Whether you're commuting or training, it provides the necessary warmth and comfort to keep you focused on your ride. Its lightweight and streamlined design make it a versatile addition to any cyclist's winter gear.

Brand:Castelli

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8056006196331

Headwear

Black

2 retailers

Sigma Sports Best price

£19.99 *

In Stock Free delivery over £60.00 30 days returns Click & collect

Retailer information

We checked this product from this store on 10 Feb 2026 at 18:43.

Delivery

Free over: £60.00
Restrictions: Not available to some remote UK postcodes: AB, BT, DD, DG, EN, HS, IM, IV, KW, LD, PA, PH, SY17, SY18, SY19, SY20, SY23, SY24, SY25 & ZE. BFPO orders have size limits: max 45cm L x 35cm W x 16cm D, 2kg.
Couriers: Royal Mail, DPD, DHL

Returns & refunds

Return window: 30 days
Methods: Post using returns label or direct to warehouse.
Return cost: £3.50
Refund: 8-10 working days
Policy: Returns within 30 days, items must be unused and in original condition with tags attached.

Collection & in-store

Click & collect: Available
Locations: Stores at Hampton Wick and Oakham.
Availability: In store & online

Payment & finance

Methods: Visa, Mastercard, PayPal, Amazon Pay, Apple Pay
Interest-free: up to 48 months

Support

Contact: Phone: 0333 006 8833, email via contact form, live chat, WhatsApp.
Self-service: Online account for invoices, track orders, submit returns.

Other

Installation: Premier Bike Delivery with mechanic handover for doorstep setup.
Gift options: eGift vouchers available, valid for 24 months.
Rating: 5/5 from 90% of customers on TrustPilot
Sustainability: Paperless invoicing to reduce paper use.

Open retailer

Start Fitness

£20.90 *

Out of Stock Next day delivery 30 days returns Pay later: Yes