Ethically manufactured & distributed, quality straws for storing tree cores can be expensive and hard to find. These paper straws are more breathable than plastic and easy to label. Re-use until they're worn out, then recycle! Products made in U.S.A
 
Dimensions ensure a good fit for cores from 4.3mm & 5.15mm standard increment borers:
10 in. (25.4cm) long
0.31 in. (8mm) inside diameter