They use a mix of materials: metal/steel frames for structure, woven natural materials like water hyacinth, coconut coir/coir liners, and plastic/PP components for removable inner pots and planter boxes.
Drainage varies by model: some planters have no drainage holes, others include multiple drainage holes or a water-permeable base, and some systems add a removable tray/reservoir with overflow/drainage control.
Some planters include removable inner plastic pots, others come with natural liners such as coir (coconut fiber), and several listings specifically note coir or coconut coir baskets as the included liner material.
Many models are designed for wall placement both indoors and in covered outdoor spaces; some are intended specifically for indoor use while others are rated for outdoor or covered-exterior locations like patios and balconies. Suitability depends on the specific model.
Styles include oval and half-round/half-circle planters, rectangular troughs, U-shaped and curved half-moon profiles, and tiered or multi-box vertical designs for decorative vertical displays.