I'm one of the last people out there still offering custom glue services. If you want a sponge glued to the topsheet, use the add a sponge button right after ordering the topsheet.
Add Sponge to Topsheet
Probably this is going to be cannon (white air sponge around 38deg), but may be substituted with other sponges of similar cost, or I may match sponges with the selection. Whatever I use it will be at least the quality of the factory sponge that normally comes under the pips, and probably much better. Be aware that many of the long pips with thin base are difficult for me to glue perfectly, but I think on average I do as good of a job as can be done.
Save $1 when ordering with a topsheet!
DefenderS Topsheet
Same topsheet as the regular rubber, but these topsheets are really big in case you have a Hock or Toxic blade that doesn't usually fit well. - NOTE: The ITTF isn't into mixing and matching topsheets any more, so when these are gone I won't be getting more.