San Sebastian One Piece

San Sebastian One Piece

The San Sebastian one piece is the perfect piece to wear if you want to look sexy and chic while being active. This piece will leave head turnings whether you are surfing, swimming, walking the beach, or poolside sipping on a cocktail.

-Side cut details

-Adjustable straps

-Built in under wire & light padding

-80% Nylon, 20% Spandex



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Size Chart


    • Size
    • XS
    • S
    • M
    • L
    • Cup Size
    • 32-34A
    • 32-34B
    • 34-36B-C
    • 34-36C-D


    • Size
    • XS
    • S
    • M
    • L
    • Pant Size
    • 0-1
    • 2-4
    • 6-8
    • 10-12
    • Low Hip
    • 34-35
    • 36-37
    • 38-39
    • 40-41


Issa de’ mar reserves the right to refuse the package and/or return to sender should the merchandise not meet these requirements.

All items purchased on are eligible for EXCHANGE or STORE CREDIT ONLY as long as they meet the following requirements:

  • Bikinis must be unworn, unwashed, undamaged, and unused.
  • Must have original tags and accessories attached.
  • The protective hygienic slip must be attached to bikini bottoms and/or one pieces
  • Email with your order number within 7 days notifying of your exchange or return for store credit.
  • Package must be received within fourteen days of date of delivery (we use tracking number) and order number must be written on outside of return package
  • MUST include invoice/packing slip and our exchange form or it will be sent back to sender
  • All items discounted, purchased on sale or using a promotional code are final sale and cannot be returned/exchange for store credit except our welcome code discount ONLY.
  • For all information for returns/exchanges please download our return form below:

  • For Return Exchange Form
  • Any questions please email

Please note that you must wash or rinse your suits gently and line dry, we do our best to provide you with quality products but they are not indestructible.