Ensure "Enable Custom Content and Mods" is checked in your game's menu.
If you'd like, I can help you find for this slide or look for other pool-themed CC like loungers and floaties. FUNCTIONAL POOL SLIDES MOD! | The Sims 4 Functional Pool Slide converted from TS3
: Sims can climb up the ladder and slide directly into the pool. Ensure "Enable Custom Content and Mods" is checked
: Generally usable by Sims from Children to Elders . Technical Requirements Functional Pool Slide converted from TS3