A sieve with four substantially vertical side walls A,B,C & D connected at their lower edges to a flexible base with a rectangular grid E. The sieve is flexible enough to be folded flat for storage and has handles or cut out holes on at least two opposing vertical side walls. In one embodiment the handles are formed by inserting rigid tubes or poles into pockets along the top edge of two opposite vertical sides. The sieve is intended for sieving compost, soil or the like.