Deck Umbrella Mounting Adapters — Silicone Pole Rings Key benefits Secure, stable hold for outdoor umbrellas: provides reliable support for patio and deck umbrellas to improve shade stability. Versatile compatibility: designed to accommodate umbrella poles up to 3.8 cm in diameter and to fit a range of common pole sizes. Durable silicone construction: soft but resilient material cushions the pole, reduces wobble, and resists deformation under normal use. Ideal for homeowners and small businesses: practical solution for residential patios, café tables, balcony setups, and other small commercial outdoor seating areas. Features Function: acts as a deck-mounted adapter (umbrella hole ring) to position and stabilize umbrella poles in existing table or deck holes. Material: made from silicone for a flexible fit around different pole thicknesses and to help minimize rattling. Size compatibility: supports poles with diameters up to 3.8 cm; the ring design allows use with multiple standard pole sizes. Performance: improves umbrella stability and pole alignment when used on balconies, terraces, courtyards, and similar outdoor spaces. Practical use scenarios Balcony or apartment terrace: use the adapter in an outdoor table or deck hole to secure a personal patio umbrella and reduce wobble while relaxing or dining. Small café or bistro: retrofit outdoor seating areas with these rings to provide a neater, more stable umbrella setup for customers without major hardware changes. Courtyard or backyard seating: place the silicone rings in existing umbrella holes to support seasonal umbrellas, improving alignment and user comfort. Compatibility and care Intended for use with standard umbrella poles up to 3.8 cm diameter. Silicone construction is intended for normal outdoor use; follow general care practices for silicone products (clean with mild soap and water as needed). This product provides a straightforward, compatible way to improve umbrella stability on balconies, terraces, and small commercial outdoor areas without changing your umbrella or deck hardware.