High summer, what better time to thoroughly mess-test a swimsuit? The latest scene on Saturation Hall sees Felicity doing a spectacular swimsuit filling of her unlined Decathlon teal one-piece swimsuit, with syrup and custard!

The scene: https://saturationhall.com/?set=gm-4f086

The trailer: https://saturationhall.com/public/trailers/tgm-4f086-v1-fidelity-fills-unlined-decathlon-swimsuit-trailer-hb.mp4

Big fan of these swimsuits, we have a couple in our collection.

We have a full set of sizes, and TBH I'm thinking to perhaps buy a second set just to be sure, as they probably won't always be available.

I've always loved swimsuit filling, both with suits worn as underwear where the leaking gloop then messes up the outer clothes from within, and done raw where we get to see every leak, squirm, and wiggle.

I've always thought there's a unique vulnerability that a traditional swimsuit filling brings to the recipient as the crotch of her suit gradually vanishes as the leaking goo envelops it and drips and flows between her legs.

I've attached a few examples showing both lined and unlined suits in action:

Pic 1 shows Sister Graves filling an unlined swimsuit with custard, note even though she's using the slightly thicker supermarket own-brand (as opposed to the runnier value brand), it's coming through the front of the suit nicely, as well as completely flooding between her legs. (Sister Graves Suitfilling Masterclass)

Pic 2 features Roxanne Bramble having her Decathlon unlined suit mess-tested by Aurora with value-brand custard, everything you see on the front of her suit has leaked through from within, no external treatment has been given yet.

Pic 3 is from this thread's set and shows Fidelity's crotch developing nicely. In this case she's filled the suit with syrup first, then custard, initially the syrup has a slight "custard-proofing" effect which is why you can mostly see syrup-wetness coming through the front of the spandex, however the custard has started to properly leak through down below. Over time the custard and syrup mix into an absolutely beautiful flowing mess which will eventually engulf the entire swimsuit.

Pics 4, 5, and 6 show Chastity and Fidelity filling modern lined swimsuits. Pic 4 shows Fidelity about to receive her first pour of Devon Dream, which is a much-missed messy treat that sadly went out of production during the Great Pestilence - it tasted like custard but flowed like single cream, so it really was the ideal thing to use for clothes filling or swimsuit filling, where you really wanted show-through to happen. Her first was done in a tracksuit so she knew how messy she was going to get, but this was her first time in just a swimsuit, note the excited anticipation.

Pic 5 shows Fidelity, with Devon Dream coming nicely through the crotch of her own suit, getting her own back on Chastity with some value brand custard. This is actually the second can Fidelity has emptied into Chastity's suit, and yet so far very little is showing, though you can spot some dampness starting down below. Also note Fidelity's suit doesn't have anything showing through the front yet, even the much runnier Devon Dream has only really come through between Fidelity's legs where there's more movement and strain to push it through the lining and spandex.

Pic 6 shows Fidelity having the unlined back of her swimsuit filled - note how much more flow-through there is with no lining to block it. Potentially more flow-through could be done in modern suits by filling the back first, though to me that's not quite as good, as when you fill the back of a swimsuit you then get a reservoir of gloop under the recipients bottom, from where it drips like a tail, rather than the "drips straight between her legs" you get from a front-filling.

Pic 7 - back to the good old unlined days, this is Nurse Wendy wearing an unlined suit she's thoroughly filled with Devon Dream and custard, happily enjoying the mess flooding from the underparts of her swimsuit. She's about to put a clean and dry trousers and tunic nurses uniform back on over her mess-drenched suit.

Pic 8 shows Chastity wearing an unlined swimsuit which has been filled with Devon Dream and custard by Friday during their "swimsuit comparison" scene. I think this one really captures the vulnerability of swimsuit filling, and is one of my all-time favourite wam images that I've created.

Pic 9 shows Lady Jennifer filling a modern lined swimsuit with supermarket-brand custard. Note there's a nice wet stain showing through at the front, and a little leakage at her legs, as yet no actual yellow leak-shrough or drippage. Compare to Pic 1 where Sister Graves is filling an unlined swimsuit with the same typer of custard, with far more flow-through happening. Lady Jennifer did eventually achieve flow-through as Pic 10 shows (in that one she's also pulling her messy shorts, which she drenched in custard in a tray, back on) - but it took rather longer for the full flow effect to develop in her suit.

Pic 11 shows Veronica happily pouring lashings of supermarket-brand custard into a modern lined swimsuit, she has managed to achieve full leak-through down below, by doing it sitting down, thus increasing the strain and pressure on the swimsuit material down there even more, plus she started with Devon Dream for extra runniness.