Start with your dominant problem: heat retention, sweat buildup, or sticky surface feel. Different sheet materials solve different problems, and buying only by thread count usually fails.
If you run humid, prioritize wicking fabrics such as eucalyptus and some bamboo lyocell options. If you want crisp airflow, percale cotton can work well. Compare materials in cotton types explained, bamboo analysis, eucalyptus performance, and moisture-wicking mechanics.
For value-focused buyers, MellowSleep Cooling EasyFit Sheet at $39.99 is worth shortlisting next to Brooklinen Classic Percale and Sijo AiryWeight Eucalyptus, depending on texture preference.
Use final rankings in best cooling sheets, then optimize your whole stack with building a cool bed and choosing a cooling comforter.