The Arena Poseidonia Swim Mid Jammer is engineered for swimmers who demand excellence in the water. Featuring a bold, race-inspired design, these mid jammers are crafted from MaxLife Eco fabric, offering maximum chlorine resistance and long-lasting durability. Whether you’re training for competition or perfecting your technique, this performance jammer delivers a compressive, body-hugging fit that won’t budge — reflecting Arena’s trusted legacy of Olympic-level innovation.
Proudly made in Italy using 50% recycled polyester, the Poseidonia Mid Jammer combines sustainability with high-end performance. Quick-drying and equipped with 50+ UV protection, it’s ideal for both indoor training and outdoor swimming. The 35 cm side length, front lining, and adjustable drawstring ensure a secure, distraction-free fit — so you can focus on speed, power, and precision with every stroke.
Size Chart
Size Chart
| Size Chart | Waist | Hips |
| 28 | 28.5 in | 73 cm | 34.5 in | 88 cm |
| 30 | 29.5 in | 75 cm | 35.5 in | 90 cm |
| 32 | 31.5 in | 80 cm | 37.5 in | 95 cm |
| 34 | 33.5 in | 85 cm | 39.5 in | 100 cm |
| 36 | 35.5 in | 90 cm | 41.5 in | 105 cm |
| 38 | 37.5 in | 95 cm | 43.5 in | 110 cm |
| 40 | 39.5 in | 100 cm | 45.5 in | 115 cm |
Arena
Arena
Arena
Arena
Arena
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