Round Toilet Seat, Slow Soft Quiet Close, Thicken Engineering Plastic, No Wiggle Never Loosen,Easy To Install And Clean, Fits All America Standard Toilets (Biscuit/Linen,16.5”ROUND) - Amazon.com
Renovators Supply Manufacturing White Plastic Soft Close Toilet Seat Elongated Slow Close Toilet Seat with Adjustable Mounting Hardware - Amazon.com
Soft close toilet seats - slam no more!
Executive Toilet Seat by Bath Royale
KOHLER Figure Plastic White Elongated Soft Close Toilet Seat at Lowes.com
WSSROGY Toilet Seat Elongated with Cover Soft Close, Easy to Install, Plastic, White, Suitable to Elongated or Oval Toilets - Amazon.com