Sorry men. No green briefs for you just yet.

Yes, you read that correctly. Carbon neutral panties are here!

Marks & Spencer (M&S), the U.K.’s largest clothier, can now officially say its undergarments are ‘green’. While the announcement was a few months shy of making this year’s St. Patty’s day, the company is officially selling its carbon neutral bras to U.K. shoppers.

Spurred through by corporate social responsibility campaign Plan A (because there is no plan B, the company says), M&S teamed with MAS Holdings, Sri Lanka’s biggest apparel company, to build the carbon neutral clothing factory in Thulhiriya, Sri Lanka.

In a likely effort to ensure shoppers will purchase the new eco-friendly produced undergarments, M&S has promised to price the garments comparably to their ‘dirty’ cousins not made in a green factory.

MAS Holdings opened the doors to the Thulhiriya plant last month and according to The Economist, in an effort to minimize its carbon impact, the plant includes green building materials, from rainwater harvesting to evaporative cooling systems.

While the factory hasn’t been officially acknowledged as a green building by powers that be, according to M&S, hopes are high on LEED certification, the widely accepted international scheme run by the U.S. Green Building Council.