Sea Island Cotton Crew Neck Jumper
Select colour: Black
This soft round-neck jumper is knitted from 100% Sea Island cotton. Originating in the West Indies and still harvested by hand, Sea Island is the world's rarest cotton and has the longest staple, giving it both strength and extraordinary softness. It was first introduced to Sunspel by our founder Thomas Hill.
Product Code: MJUM8049-BKAA
- 100% Sea Island Cotton
- Sourced from the West Indies and Spun in Switzerland
- Gentle wash at 30°C
- Wash dark colours separately
- Do not tumble dry
- Dry cleanable
- Made in Portugal
- Regular fit
- Model is 183cm, chest 102cm and wears a size M
- Delivery within 1-5 working days.
- €5 or free for orders over €150.
- All orders and returns are processed via our EU warehouse.
- For full delivery and returns information, click here.
- For deliveries outside of Europe, please visit our UK, US, or Rest of World sites.
- Shopping for a loved one? You can add a gift box to your order in the cart.
- For our full list of Christmas delivery cut-off dates, click here.
- Full price items purchased from Monday, 10th November 2025 can be exchanged or returned for a refund until Sunday, 4th January 2025. After 7th December 2025, our regular full price return policy of 28 days applies.
We accept the following payment methods:
- Payments are accepted via credit card, debit card, PayPal, Apple Pay, Google Pay and Shop Pay with a valid billing and shipping address. Klarna and iDEAL are available in selected countries.
- Accepted cards are Visa, Mastercard, American Express, Discover, Diners Club, Maestro, Elo and UnionPay.
The world’s finest and rarest cotton
Renowned for its beautifully soft handle, Sea Island cotton is the most luxurious cotton in the world. Reaching up to 50mm, it has the longest staple length of all cotton types – 50% longer than standard extra-long staple cotton – creating softer, more durable fabrics that are so smooth Queen Victoria mistook them for silk.
It is also the rarest cotton in the world. Grown by specialists in the Caribbean, each filament is picked by hand to ensure no strand is damaged. A mere 150 bales are produced each year accounting for just 0.00002% of global supply, and these are spun by experts in Switzerland, who, like us, have been working with this unique fibre for well over a century.
“So soft it almost feels like silk”
Financial Times HTSI
