{"releaseId":"sha256:ac5dd8d905c00eace5353304a9456358eede4224f3a935465432ab184b4d049a","startup":{"record_contract":"stompstart.startup/v1","startup_id":"stp_11abb8b27a1afcd3b2ca4f7137","subject_id":"sub_29d6732e9371e6794a1c59ae06","slug":"percko","stewardship":"editorial","directory":{"state":"unlisted"},"name":"Percko","tagline":"Percko - An undershirt that teaches you how to have the right posture.","description":"Only a directory excerpt of the listing survives. It described the Percko as an undershirt lined with tensors shaped to the back: sitting straight, you feel nothing, but hunching or slouching triggers a slight stimulation. It was tagged for back pain and poor posture.","highlights":[],"website":{"state":"known","url":"https://www.percko.com/"},"access":[{"kind":"browse","url":"https://www.percko.com/"}],"platforms":[],"surfaces":[],"classification":{"categories":["health"],"stage":"unknown"},"pricing":{"model":"unknown"},"company":{"state":"unknown"},"people":{"state":"unknown"},"location":{"kind":"unknown"},"founded":{"precision":"unknown"},"media":{"gallery":[]},"links":[],"status":{"label":"operating","basis":{"kind":"observation","observation_id":"obs_3ca0b3780e481c8dec29e6c9bc"},"checked_on":"2026-09-29","confidence":"high","hook":"A Paris undershirt lined with tensors that nudged wearers when they slouched, now the core of a back-care brand that also sells mattresses and chairs.","summary":"Percko is still operating at percko.com from Paris, selling posture t-shirts with what it calls a patented tensioning system alongside a posture bra, an ergonomic office chair, mattresses, pillows and other back-care products. The company says more than 500,000 people use its products."},"citations":[{"url":"https://www.percko.com/","title":"percko.com","kind":"first_party","retrieved_at":"2026-09-28T00:00:00Z","capture_attempt_digest":"sha256:1916bf5fd8bc369ceac8838fdb0aee1c1f71dec52d7938dda5440500a50bb5e7"}],"corrections":[],"revision_digest":"sha256:e1e762e5749fe4c4c3566f2000176d2626008e2b03ab3cb0440d0c4b3b834ea2"},"basis":{"kind":"observation","observation":{"record_contract":"stompstart.observation/v1","observation_id":"obs_3ca0b3780e481c8dec29e6c9bc","capture_attempt_digest":"sha256:38c2039626e137c36b938bd055eaaa353ecb118c17616cc9055c5f9c6718c087","observed_at":"2026-09-29T12:23:07.254Z","checked_at":"2026-09-29T12:23:07.254Z","corrections":[],"kind":"site_check","startup_id":"stp_11abb8b27a1afcd3b2ca4f7137","page_url":"https://www.percko.com/","site_verdict":"product_live","revision_digest":"sha256:3ec18b04b7dc6f20c4cb292c490b5b6d958fb22ae61805c836e2b36d3a1c85ae"}},"events":[],"nextEventCursor":null,"siteChecks":[{"record_contract":"stompstart.observation/v1","observation_id":"obs_3ca0b3780e481c8dec29e6c9bc","capture_attempt_digest":"sha256:38c2039626e137c36b938bd055eaaa353ecb118c17616cc9055c5f9c6718c087","observed_at":"2026-09-29T12:23:07.254Z","checked_at":"2026-09-29T12:23:07.254Z","corrections":[],"kind":"site_check","startup_id":"stp_11abb8b27a1afcd3b2ca4f7137","page_url":"https://www.percko.com/","site_verdict":"product_live","revision_digest":"sha256:3ec18b04b7dc6f20c4cb292c490b5b6d958fb22ae61805c836e2b36d3a1c85ae"}],"listings":[{"listing":{"record_contract":"stompstart.listing/v1","listing_id":"lst_b92abfd80d40beac2762feb33d","startup_id":"stp_11abb8b27a1afcd3b2ca4f7137","original_url":"http://stompstart.com/percko","legacy_paths":["/percko"],"listed_on":{"precision":"unknown"},"editorial_summary":"Only a directory excerpt of the listing survives. It described the Percko as an undershirt lined with tensors shaped to the back: sitting straight, you feel nothing, but hunching or slouching triggers a slight stimulation. It was tagged for back pain and poor posture.","media":[],"citations":[],"corrections":[],"revision_digest":"sha256:5780aa075e7fb4748745f3bbaae711342ce93896aeb2fb79c568039f9751a512"},"observations":[{"record_contract":"stompstart.observation/v1","observation_id":"obs_8f90b756a1e9aa8835b3a53314","capture_attempt_digest":"sha256:c929f3b37023769faf14fdcc25e801e3b8bfe50e49022a52021b8091f74689fb","observed_at":"2019-08-22T12:23:17Z","checked_at":"2026-09-29T12:02:16.516Z","corrections":[],"kind":"archive_listing","listing_id":"lst_b92abfd80d40beac2762feb33d","page_kind":"directory_card","extractor":{"name":"stompstart-archive-extractor","version":"1+b094880b3b02556f"},"original_listing_url":"http://stompstart.com/percko","page_url":"https://stompstart.com/startups/located/Paris","listed_on":{"precision":"unknown"},"page":{"name":"Percko","pitch":"Percko - An undershirt that teaches you how to have the right posture.","description":"The Percko is an undershirt lined with tensors in the shape of your back with the idea of good posture in mind. When you’re sitting up straight, you don’t feel a thing. But when you hunch, slouch or move in any way that’s bad for your back, you’ll feel a slight stimulatio...","description_kind":"excerpt","stage_text":"Public Beta","market_tags":[],"location":{"city":"Paris","country":"FR"},"links":[],"redactions":0},"attachment_digests":[],"revision_digest":"sha256:9d7f320c737ffb7df28f5f0ef92d65f08fd72ecb59066dfa47be1a9b6eb1781a"}],"moreObservations":false}],"moreListings":false,"stories":[{"storyId":"sty_c4e09844d38747136921001190","slug":"roundup-still-here-3","kind":"roundup","title":"From cat boxes to code hosting, 24 startups still operating or online","dek":"Twenty-four startups listed between 2014 and 2019 can still be found under their old names, nineteen with dated activity in 2025 or 2026 and five still online, including rollApp, which announced in January 2026 that it will wind down during 2026.","publishedOn":"2026-09-29","checkedOn":"2026-09-29","startupCount":24,"image":null}],"moreStories":false}