
The significant expansion time (up to 48 hours) is a recurring comment and often not adequately communicated. The thickness discrepancy (advertised as 7cm, but often 3-5cm) is also a common issue. Users should be aware that the product may feel harder than expected, or softer than expected, and that the stated thickness may not be accurate. The quality appears inconsistent, with some users reporting long-term durability and others experiencing uneven wear and rapid loss of firmness. The initial smell may be a concern, and a strong synthetic odor is reported. Suitability is highly dependent on individual preferences and existing mattress firmness; many find it too hard, especially side sleepers, while others find it soft and comfortable. The topper''s tendency to slip and inconsistent sizing are additional concerns. Some users suggest purchasing a non-slip cover to address slipping. The reported expansion time varies widely. The significant number of negative reviews concerning hardness and the significant number of positive reviews concerning softness suggest a potential design or manufacturing flaw, or significant inconsistencies in individual products or user experience. Users should carefully consider their mattress firmness and sleeping position before purchasing. The return policy should be carefully examined before purchase. The considerable number of reviews mentioning both extreme satisfaction and extreme dissatisfaction highlights significant inconsistency in product quality or user experience. The topper''s suitability may depend on the type of mattress frame (e.g., it may be unsuitable for mattresses with comfort zones). The wide range of experiences suggests significant product inconsistencies. The discrepancy between advertised and actual thickness is a major point of concern. The descriptions of softness and comfort are countered by other reviews describing excessive hardness. The reports of a strong synthetic smell are concerning.