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Castelli Core Seamless Long Sleeve Baselayer Black

Castelli Core Seamless Long Sleeve Baselayer Black

Brand: Castelli

SKU: Select a size

Size: Select a size

SM/MD LG/XL 2XL

$81.00 Full price

$81.00

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$124.99 Full price

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Product Details

Description

The Castelli Core Seamless Baselayer Long Sleeve is a soft, stretch-friendly base layer made for cool rides when you want comfort that lasts from start to stop. With seamless construction and a polyester plus polypropylene yarn blend, it wicks moisture while helping you stay warm without feeling bulky, so you’re less likely to get chilled when the temperature drops. It’s ideal for staying dry and comfortable under your cycling jersey thanks to its wide neck opening and regular fit.

Key Features

Seamless design for comfort and stretch
Polyester and polypropylene moisture wicking
Surprisingly warm for its light weight
Lighter fabric on sides and back
Wide neck opening for easy jersey fit

Specifications

Product Overview

Product

Castelli Core Seamless Long Sleeve Baselayer Black

Brand

Castelli

Parent SKU

GMEDK2MF

Size SKUs

SM/MD: CLCJB0531010-SM
LG/XL: CLCJB0531010-LXL
2XL: CLCJB0531010-2XL

Matrix Barcodes

SM/MD: 8050949226148
LG/XL: 8050949194539
2XL: 8050949226155

Year Model

Winter 2026

Product Features

Colour

Black

Frequently Asked Questions

What is the Castelli Core Seamless Baselayer Long Sleeve used for?

The Castelli Core Seamless Baselayer Long Sleeve is used as a comfortable, moisture-wicking base layer for cycling in cool to mild conditions.

Why choose the Castelli Core Seamless Baselayer Long Sleeve?

Choose the Castelli Core Seamless Baselayer Long Sleeve for its seamless comfort, warm insulation, and effective moisture management that helps you stay dry and comfortable during and after hard efforts.

Who is the Castelli Core Seamless Baselayer Long Sleeve designed for?

The Castelli Core Seamless Baselayer Long Sleeve is designed for cyclists who want a warm, lightweight, stretch fit base layer for riding from about 4°C to 16°C.

Warm comfort without bulk

Delivers reliable insulation in cool conditions while staying lightweight for everyday riding.

Stays drier when the ride gets sweaty

Moisture management helps reduce that clammy, cold feeling on the go.

Seamless stretch for all-day feel

Smooth construction minimises irritation so you can focus on the ride.

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