Quality training ball Hydratec surface enhances ball life and performance Grippy rubber surface Three ply cotton and rubber laminate construction Ideal for handling drills The rugby ball shown in the may not be the exact color that you receive. Rugby Ball Inflating Instructions Moisten the needle before inserting. Use Glycerin or Vegetable oil.ĘThis seals the area around the valve, while saliva does not. Push the needle carefully into valve. Do not push the needle against the other side of the ball as this can puncture the bladder. Inflate to 9 10 PSI All natural latex bladders will deflate over a period of time. Always inflate before use.