Unverified80% confidenceTradeoffTime unknown
硬质泡沫（发泡PE/PU）浮力大且价格低但边缘偏硬握持磨手、长期使用易吸水碎裂；EVA更耐久防水但同尺寸浮力略低，长期训练优先EVA
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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UnverifiedEVA材质比PU泡沫更耐用防潮，适合户外地面潮湿的场景；PU泡沫坐感更软但吸水后易变形83% similarUnverifiedEVA材质浮球比PE空心浮球更耐用且浮力衰减慢，长期泡氯水的泳池训练优先选EVA一体成型款81% similarUnverified水中哑铃/浮力棒选EVA闭孔发泡材质而非普通泡沫，闭孔结构不吸水、浮力稳定，长期泡氯水不易碎裂掉渣；密度建议在40-60kg/m³之间，太软浮力衰减快，太硬阻力训练效果差79% similarUnverified闭孔EVA材质浮力棒不吸水、浮力衰减慢，PE（聚乙烯）材质则更硬、抗压性好但泡沫容易在暴晒后开裂粉化，长期户外泳池优先选闭孔EVA78% similarUnverifiedEVA材质防水好、便宜但硬且不透气，低温下发脆；PU/涤纶涂层柔软透气但耐水压略低——日常首选PU软质，只在暴雨专用场景选加厚EVA78% similar
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