Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Fibers maintains its standards for the high quality of its published papers. Thanks to the cooperation of our reviewers, in 2020, the median time to first decision was 16.5 days and the median time to publication was 4.9 days. The editors would like to express their sincere gratitude to the following reviewers for their precious time and dedication, regardless of whether the papers were finally published:
| Abe, Mitsuru | Li, Hao |
| Adamczyk, Greta | Li, Lengwan |
| Adomavičiūtė, Erika | Liang, Yuan-Chang |
| Agrela, Francisco | Liao, Shu-Chuan |
| Al-ajrash, Saja M Nabat | López, Roberto |
| Almeida Júnior, José Humberto | Lu, Tao |
| Alvarez, Noe T. | Luo, Yanhua |
| Anashkina, Elena | Maeda, Tomoki |
| Andrzejewski, Jacek | Maimistov, Andrei I. |
| Anyszka, Rafał | Małek, Marcin |
| Arafa, Ahmed | Mamiński, Mariusz |
| Arumugam, Veerakumar | Martinelli, Enzo |
| Arunachalam, Shivaram | Matas, Richard |
| Aslanzadeh, Samira | Mattarelli, Maurizio |
| Athanasiou, Christos-Edward | Memon, Hafeezullah |
| Auclair, Nicolas | Micelli, Francesco |
| Badar, Mudabbir | Michalowska, Joanna |
| Badilescu, Simona | Milasius, Rimvydas |
| Bai, Ruixiang | Minafo, Giovanni |
| Bajpai, Ankur | Mironova, Maria |
| Barbi, Silvia | Mishra, Rajesh |
| Barbinta-Patrascu, M. E. | Moeyaert, Véronique |
| Barbudo, Auxi | Mollica, Francesco |
| Basavegowda, Nagaraj | Montes, Raquel |
| Batmunkh, Munkhbayar | Mordak, Arkadiusz |
| Battegazzore, Daniele | Morozov, Oleg |
| Bazrafshan, Zahra | Murari, Krishna |
| Belletti, Beatrice | Narkar, Ameya |
| Beszédes, Sándor | Nečasová, Barbora |
| Beverini, Nicolo’ | Negulescu, Ioan |
| Bielas, Rafał | Neto, Maria |
| Biscaia, Hugo C. | Netravali, Anil N. |
| Blanche, Pierre-alexandre | Nicolescu, Cristina Mihaela |
| Brandus, Catalina-Alice | Ning, Haibin |
| Breier, Annette | Nypelo, Tiina |
| Burdin, Vladimir | Ogunro, Vincent |
| Cabrales, Luis | Oliveira, Ricardo |
| Cabrera, Manuel Montenegro | Oliver, Zeman |
| Caldas, Paulo | Oller, Eva |
| Camões, Aires | Ombres, Luciano |
| Castell, Pere | Osório, Jonas H. |
| Caydamli, Yavuz | Ozerov, Maxim |
| Cecone, Claudio | Pandey, Sadanand |
| Cesano, Federico | Papavasileiou, Georgios |
| Chalioris, Constantin | Paria, Debadrita |
| Chao, Niu | Perry, Philip |
| Chen, Huizhi | Peterka, Pavel |
| Chen, Kai-Sheng | Phoenix, S. Leigh |
| Chen, Liang | Piątek, Bartosz |
| Chen, Yang | Pietrasik, Joanna |
| Cheng, Liangliang | Piszczyk, Łukasz |
| Cheraghian, Goshtasp | Politakos, Nikolaos |
| Chiadighikaobi, Paschal Chimeremeze | Popescu, Vasilica |
| Chiang, Chin Lung | Popov, Anton |
| Cho, Jung Sang | Porubská, Mária |
| Choi, Donguk | Posadas, Pilar |
| Chylinski, Filip | Prati, Franco |
| Cloutier, Alain | Pucci, Monica Francesca |
| Cohen, Yachin | Puiggalí, Jordi |
| Constantinescu, Horia | Rabbani, Mohammad Mahbub |
| Cruz, Jose Luis | Rallini, Marco |
| Cruz, Sandra | Reiterman, Pavel |
| Czarnecki, Lech | Rokosz, Krzysztof |
| Danihelová, Anna | Romagnoli, Manuela |
| Del Toro, Eva M. García | Romano, Valerio |
| Dey, Vikram | Roskosz, Maciej |
| Dhaliwal, Gurjot S. | Ruffato, Gianluca |
| Diban, Nazely | Russo, Pietro |
| Dogossy, Gábor | Rusu, Daniela |
| Duisit, Jerome | Sansonetti, Antonio |
| Dziurka, Dorota | Santulli, Carlo |
| Eid, Rami | Sarasini, Fabrizio |
| Espinach, Francesc Xavier | Saratale, Ganesh Dattatraya |
| Esposito, Flavio | Satyavolu, Jagannadh |
| Faleschini, Flora | Schenato, Luca |
| Feito, Norberto | Serbezeanu, Diana |
| Ferdous, Wahid | Sharma, Akanshu |
| Ferretti, Elena | Sharma, Amit |
| Fiedler, Holger | Shevtsov, Sergey |
| Filimon, Anca | Shi, Zengqian |
| Formela, Krzysztof | Shimomura, Takeshi |
| Francolini, Iolanda | Shojaei, Arman |
| Furtado, André | Si, Ruizhe |
| Gabrion, Xavier | Silva, Mónica |
| Gadomska-Gajadhur, Agnieszka | Sinha Ray, Sumit |
| Gajdošová, Katarína | Smarzewski, Piotr |
| Gajjar, Chirag | Soltani, Madjid |
| Gao, Yunkai | Spear, Morwenna |
| Garašić, Ivica | Straže, Aleš |
| Garcia, Iñaki | Su, Tzu-Sen |
| García, Marcos | Summerscales, John |
| Gheni, Ahmed A. | Sun, Guangyong |
| Ghosh, Monoj | Suragani Venu, Lalith B. |
| Gizdavic-Nikolaidis, Marija | Suraneni, Prannoy |
| Goncu-Berk, Gozde | Surowska, Barbara |
| González, Israel | Szczerska, Malgorzata |
| Gordon, Stuart | Szolnoki, Beáta |
| Gorjanc, Marija | Sztubecka, Małgorzata |
| Grgić, Nikola | Taghizadeh-Mehrjardi, Ruhollah |
| Guangjiu, Zhao | Takano, Toshiyuki |
| Hager, Izabela | Tausif, Muhammad |
| Han, Young-Geun | Tejchman, Jacek |
| Handge, Ulrich A. | Tenza-Abril, Antonio José |
| Harja, Maria | Tofel, Pavel |
| Hausmann, Joachim | Toffano, Zeno |
| Hejna, Aleksander | Togawa, Eiji |
| Hicke, Konstantin | Tomasic, Nenad |
| Hideaki, Katogi | Tranquillo, Elisabetta |
| Hlavička, Viktor | Trejbal, Jan |
| Hong, Chih Chiang | Tung, Nguyen-Dang |
| Iatsunskyi, Igor | Turitsyn, Sergei |
| Iliopoulos, Ioannis | Ushakov, Nikolai |
| Islam, Saful | Usman, Muhammad |
| Iuliana, Hudisteanu | Velha, Philippe |
| Jamshidi, Ali | Villanueva-Llauradó, Paula |
| Jan, Suchorzewski | Voepel, Pascal |
| Janas, Dawid | Vrabič Brodnjak, Urška |
| Jayaraman, Krishnan | Wang, Kai |
| Jesson, David | Wang, Yixiang |
| Jiang, Chengmin | Wan-Wendner, Roman |
| Jo, Hwanju | Wasik, Michał |
| Jung De Andrade, Mônica | Wei, Jinlong |
| K. Sharma, Sunil | Winczek, Jerzy |
| Kadi, Nawar | Włoch, Marcin |
| Kajaks, Janis | Xie, Shangran |
| Kamperidou, Vasiliki | Xie, Xinfeng |
| Kanellopoulos, Antonios | Yamazaki, Hiroshi |
| Kania, Tomasz | Yasin, Sohail |
| Karimi, Mohammad | Ye, Zhi-Ting |
| Kępniak, Maja | Yellavajjala, Ravi Kiran |
| Kim, Hoon | Yokota, Shingo |
| Kim, Hyun-Joong | Yun, Hyun Do |
| Kim, Jong Won | Zaghloul, Mohamed |
| Kliukas, Romualdas | Zavalis, Robertas |
| Kobtsev, Sergey | Zelikman, Evgeni |
| Kostoglou, Nikolaos | Zhang, Guoping |
| Kowaluk, Grzegorz | Zhang, Jing |
| Krajewski, Stefanie | Zhang, Meng |
| Krasia-Christoforou, Theodora | Zhang, Qian |
| Krmela, Jan | Zhang, Zejun |
| Kubík, Ľubomír | Zhao, Zengfeng |
| Kuo, Chung Feng Jeffrey | Zhou, Ying-Guo |
| Kusano, Yukihiro | Zhou, Yiqun |
| Kwon, Soon-Hong | Zhou, Yonghui |
| Laing, Raechel M. | Zhu, Jiadeng |
| Leese, Hannah | Zupancic, Spela |
| Lezzerini, Marco | Zych, Teresa |
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