It's about as big as a Blood Donation
It's about as big as a STARBUCKS Venti Coffee
A STARBUCKS Venti coffee drink measures 5.90 deciliters. The name of the size, Venti, is the Italian word for twenty.
It's about one-and-four-fifths times as big as a Baseball (packed)
In other words, 5.90 deciliters is 1.79489390 times the size of a Baseball (packed), and the size of a Baseball (packed) is 0.5571360 times that amount.(64% packing density) (MLB rules)
Per Major League Baseball rules, a baseball must measure between about 2.0173334 deciliters and 2.19015750 deciliters. A major league pitcher can throw a fastball at up to 150 kph (91 mph).
It's about one-third as big as an Ostrich Egg
In other words, 5.90 deciliters is 0.36150 times the size of an Ostrich Egg, and the size of an Ostrich Egg is 2.7660 times that amount.(Struthio camelus) (for common ostrich; average)
The largest egg produced by living birds, ostrich eggs measure about 16 deciliters in volume. The eggs take about nine weeks to hatch, with males and females taking turns incubating them.
It's about three times as big as a Baseball
In other words, 5.90 deciliters is 2.8045217830 times the size of a Baseball, and the size of a Baseball is 0.3565670290 times that amount.(MLB rules)
Per Major League Baseball rules, a baseball must measure between about 2.017333416 deciliters and 2.1901575260 deciliters. A major league pitcher can throw a baseball at up to 150 kph (91 mph) in a fastball pitch.
It's about three-tenths as big as a Human Stomach
It's about three-and-a-half times as big as a Tennis Ball
In other words, 5.90 deciliters is 3.7460 times the size of a Tennis Ball, and the size of a Tennis Ball is 0.2670 times that amount.(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must measure 6.54 cm to 6.86 cm in diameter, for a total volume of 1.5750 deciliters. Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm.