Lucklovely Empty Heat Sealing Nylon Triangle Filter Tea Bags for Loose Tea 5g 50Pcs Tea filter bags are single-use, disposable tea infusers for steeping high-quality loose leaf tea with the convenience of tea bags Steep tea with a more robust flavor without the hassle or mess of conventional straining Food nylon will not taint the flavor of brewed tea Steeping all types of tea, including black tea, oolong tea, green tea, chai, chamomile and other herbal tea too The bag we provided are empty, after put into tea, then heat sealed the diagonal, final it will be triangle