SYS Underwear is OPEN! Sorry for the slight delay, animals. Everything is stocked up and ready to ship! Thank you to everyone who supported us getting these off the ground, we can't wait to expand the line and only make more amazing things happen from here!

Holy shit these new sheef undies from SYS Undies are fantastic. Gonna rock them at every night market from now till forever ;3

My SYS Undies order arrived uwu

holy shit I cant believe how good these things look with pet suits like are you KIDDING me

Dear god

Sniff something you like? #petplay #pupplay #puppyplay SYS Undies

🐺🩲💦 Aaand knowing me I came thru 'em~ Wanna see me do it? You know where to look~ #MurrsuitMonday

Thank you so much SYS Undies for the cute undies and jock! They look amazing and feel super comfy 🥰

Maybe it's time to become a croc... SYS Undies

hear me out

🐺🩲💦 Cumming into my sheath~ #FursuitFriday 🩲: SYS Undies

Damn I absolutely love this SYS Undies underwear 😭 I wish I got a pair for every day of the week, they're so damn comfy x3 Plus I really enjoy seeing myself with a fluffy sheath like this 👀

Love these new undies by SYS Undies They match my colours and are super comfortable~

Got new underwear :3

HEY CANADIANS. Shipments are NOW OPEN! Thank you for your patience while we got it all sorted out! We've also added a number of other countries' availabilities to this list including Italy and Poland. If there are any issues please contact us via the website! Link in bio.

New SYS Undies have been properly broken in with some sweaty cardio