| Size | Age Group, Level, and Swim Type |
| 0 | For advanced swim classes and young age-groupers; ages 5-10 and all ages as finger tip paddles. |
| 0.5 | For ages 8-11, female masters, synchro, and all ages as finger tip paddles or high tempo drills. |
| 1 | For ages 9-13, high school females and stroke swimmers; female masters and triathletes; synchro; water aerobics and rehab; and high tempo drills. |
| 2 | For older age-groups, young high school males, older high school females (freestyle), college males (strokes), college females (freestyle), masters, triathletes, synchro, and water aerobic and rehab. |
| 3 | For senior national level females, older high school males, strong college females (freestyle), college males (freestyle and stroke), male masters and triathletes, synchro, body surfing and water aerobics and rehab. |
| 4 | For senior national-level males, college males, very strong college females, advanced male triathletes and masters swimmers, technique and cycle count drills for advanced swimmers, water aerobics and rehab, and body surfing. |
| 5 | For very strong college males, advanced and strong male masters swimmers and triathletes, technique and cycle count drills for advanced swimmers, water aerobics and rehab, and body surfing. |