Fleshlight Speed Bump
According to the manufacturer ILF the Speed Bump Fleshlight lies somewhere between the Wonder Wave and the Super Ribbed in terms of intensity. I think the level of intensity lies more within personal preferences. Some guys like ribs, some like bumps. I myself am a bumps guy and a huge fan of the Speed Bump and the Stamina Training Unit.
The insert of the Speed Bump is a repeating pattern of closely spaced little bumps that fill the 0.5 inch wide canal. Due to the height of the bumps the Speed Bump is amongst the tightest of the inserts (slightly under 0.5 inches).
The video below gives you a close look inside the Speed Bump sleeve.
This design gives the user a coherent sensation of tiny fingertips gently caressing your dick as you slide in and out. The texture allows for enough space between the bumps for vacuum to accumulate which creates an accommodating suction effect which intensifies the already blissful sensation.
The Speed Bump needs an average amount of lube, and the cleanup is swift. There is enough room between the bumps to rinse away the residues.