Used specifically for describing the thickness of woven materials, such as textiles, towels, or clothing fabric.
このタオルは地厚で、吸水性がとても良い。
This towel is thick and very absorbent.
冬用のコートは地厚な生地で作られている。
Winter coats are made of thick fabric.
Compound of 地 (ji, 'fabric, cloth') and 厚 (atsu, 'thick'). The reading じあつ is a straightforward combination of the on'yomi readings of the two kanji.